US20220202020A1 - All purpose cleaner, disinfectant, dust suppressant, bioaerosol particle remover, and pesticide microemulsion formulation and method of use - Google Patents

All purpose cleaner, disinfectant, dust suppressant, bioaerosol particle remover, and pesticide microemulsion formulation and method of use Download PDF

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US20220202020A1
US20220202020A1 US17/694,923 US202217694923A US2022202020A1 US 20220202020 A1 US20220202020 A1 US 20220202020A1 US 202217694923 A US202217694923 A US 202217694923A US 2022202020 A1 US2022202020 A1 US 2022202020A1
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microemulsion
oil
formulation
acid
amount ranging
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Jerry R. BOND
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    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01NPRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N25/00Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
    • A01N25/02Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests containing liquids as carriers, diluents or solvents
    • A01N25/04Dispersions, emulsions, suspoemulsions, suspension concentrates or gels
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01NPRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N25/00Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
    • A01N25/30Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests characterised by the surfactants
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01NPRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N31/00Biocides, pest repellants or attractants, or plant growth regulators containing organic oxygen or sulfur compounds
    • A01N31/02Acyclic compounds
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01NPRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N31/00Biocides, pest repellants or attractants, or plant growth regulators containing organic oxygen or sulfur compounds
    • A01N31/08Oxygen or sulfur directly attached to an aromatic ring system
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01NPRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N37/00Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids
    • A01N37/02Saturated carboxylic acids or thio analogues thereof; Derivatives thereof
    • A01N37/04Saturated carboxylic acids or thio analogues thereof; Derivatives thereof polybasic
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01NPRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N37/00Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids
    • A01N37/36Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing at least one carboxylic group or a thio analogue, or a derivative thereof, and a singly bound oxygen or sulfur atom attached to the same carbon skeleton, this oxygen or sulfur atom not being a member of a carboxylic group or of a thio analogue, or of a derivative thereof, e.g. hydroxy-carboxylic acids
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01NPRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N65/00Biocides, pest repellants or attractants, or plant growth regulators containing material from algae, lichens, bryophyta, multi-cellular fungi or plants, or extracts thereof
    • A01N65/08Magnoliopsida [dicotyledons]
    • A01N65/16Ericaceae [Heath or Blueberry family], e.g. rhododendron, arbutus, pieris, cranberry or bilberry
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01NPRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N65/00Biocides, pest repellants or attractants, or plant growth regulators containing material from algae, lichens, bryophyta, multi-cellular fungi or plants, or extracts thereof
    • A01N65/08Magnoliopsida [dicotyledons]
    • A01N65/22Lamiaceae or Labiatae [Mint family], e.g. thyme, rosemary, skullcap, selfheal, lavender, perilla, pennyroyal, peppermint or spearmint

Definitions

  • the microemulsion comprises, in weight percent:
  • a citrate is a derivative of citric acid; that is, the salts, esters, and polyatomic anion found in solution.
  • An example of the former, a salt is trisodium citrate; an ester is triethyl citrate.
  • the formula of the citrate ion is written as C 6 H 5 O 3 ⁇ 7 or C 3 H 5 O(COO) 3 ⁇ 3 .
  • Citric acid is widely used as an acidulant in creams, gels, and liquids of all kinds. In its use in foods and dietary supplements, it may be classified as a processing aid if the purpose it was added was for a technical or functional effect (e.g. acidulant, chelator, viscosifier, etc. . . .
  • the formulation has any number of uses, which include using it on plants as a pest control, using it as an insect repellant (flea , mosquito and tick repellant for example), a cleaner, an antimicrobial cleaner, a disinfectant, a deodorizer, a fly repellant for animals, a stainless and glass surface cleaner, a laundry detergent, a carpet cleaner, and a stain remover.
  • the formulation which is includes as an active ingredient is directly from whole essential oil of white thyme and is non-toxic, non-corrosive, non-irritating, biodegradable, falling under the EPA GRAS (generally regarded as safe) category, has been shown to be diluted up to 160 times before it loses its effectiveness against salmonella and chicken isolate CP #6 of clostridium perfringens and up to 320 times for turkey isolate of clostridium perfringens and similar results would be expected for other and similar bacteria and the like.

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  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Zoology (AREA)
  • Wood Science & Technology (AREA)
  • Plant Pathology (AREA)
  • Agronomy & Crop Science (AREA)
  • Environmental Sciences (AREA)
  • Dentistry (AREA)
  • Pest Control & Pesticides (AREA)
  • Natural Medicines & Medicinal Plants (AREA)
  • Biotechnology (AREA)
  • Microbiology (AREA)
  • Mycology (AREA)
  • Toxicology (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)

Abstract

An all 25(b) botanical food grade, all purpose cleaner, anti-microbial and disinfectant includes a microemulsion that contains effective amounts of the ingredients of thyme oil, wintergreen oil, a surfactant, citric acid, and isopropanol. The ingredients combined with water to produce a clear microemulsion for application as a cleaner/disinfectant as well as treating growing and harvested crops, animals and pets for pesticide purposes and as a dust suppressant and to disrupt bioaerosols in the air and/or remove them from the air. Areas of treatment can include hospitals, homes, construction sites, open areas outside, laboratories, and the like.

Description

  • This application claims priority under 35 USC 119(e) based on provisional application no. 62/711,785 filed on Jul. 30, 2018, said application being incorporated by reference in its entirety herein.
  • FIELD OF THE INVENTION
  • The invention relates to an all-purpose cleaner, disinfectant, and pesticide microemulsion and method of use, and particularly a thyme oil-based microemulsion that is FIFRA 25(b) compliant and can be used as a disinfectant for agricultural purposes, a common disinfectant as a cleaning disinfectant to be used on crops before and after harvest, as a common disinfectant for homes, hospitals, animals, and the like, a dust suppressant, and to remove and/or disrupt bioaerosol particles.
  • BACKGROUND ART
  • Thyme oil-based formulations for cleaning and disinfection purposes are known in the prior art. One type employs copper sulfate as the active antibacterial component. Another is based on a synthetic thyme oil product called Thymox. Neither of these products is a natural product that can be characterized as a minimum risk pesticide that is exempt from registration under the Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA). An EPA 25(b) product is one whose active and inactive ingredients are only those found on the EPA's listing, attached herewith. Therefore, there is still a need for a cleaner to meet the criteria of a 25(b) and the present invention responds to this need.
  • SUMMARY OF THE INVENTION
  • One object of the invention is a microemulsion that has a number of applications in the fields of cleaning and/or disinfecting a surface by applying the microemulsion to the surface or treating an animal or plants for at least pest control by applying an effective amount of the microemulsion to the plants or the animal.
  • In one embodiment, the microemulsion comprises, in weight percent:
  • thyme oil in an amount ranging from about 0.195 to about 0.276%;
  • wintergreen oil in an amount ranging from about 0.128 to about 0.207%;
  • at least one 25(b) surfactant in an amount ranging from about 2.159 to about 3.015%;
  • granular citric acid in an amount ranging from about 0.994 to about 1.358%;
  • isopropanol in an amount ranging from about 1.351 to about 1.886%;
  • water, the weight percentages based on the weight of a gallon of water, or 8.3 lbs.
  • Preferably, the microemulsion has pH is between 6.0 and 8.0 and the surfactant used is sodium lauryl sulfate.
  • Preferably, all components of the microemulsion are listed on the EPA active and inactive ingredients eligible for minimum risk pesticide products.
  • The invention also entails a method of cleaning or disinfecting a surface comprising applying the microemulsion to the surface and a method of treating an animal or plants for at least pest control comprising applying an effective amount of the microemulsion to the plants or the animal. One particular application for plant pest control relates to treating citrus plants or trees suffering from citrus greening disease.
  • The surface can be virtually any surface in need of cleaning or disinfecting and these surfaces include metal, plastic, wood, masonry, composite material, and the like.
  • The microemulsion can be applied using one or more of brushing, wiping using an implement like a sponge, rag, paper towel, or the like, spraying, and brooming.
  • In another embodiment for a use of the formulation relates to one or both of suppressing dust and disrupting bioaerosol particles in the air and/or removing them therefrom. This method entails introducing the microemulsion into the air by some dispersing methodology in a desired location and in an effective amount to do one or more of suppress dust contained in the air and remove and/or disrupt bioaerosol particles in the air. The types of locations can be any in need of bioaerosol treatment or dust suppression, including locations inside a structure or outside in the general environment. Structures that may require treatment include those requiring cleanliness and sanitation, e.g., hospitals or other caring facilities, laboratories, areas where dust may be a problem like construction zones and the like.
  • In a more preferred embodiment, a botanical antimicrobial formulation for use in the applications described above is provided that comprises a clear microemulsion, the microemulsion consisting of thyme oil as an active ingredient in an amount ranging from 0.15 to 0.30 wt. % of the formulation, more preferably 0.195 to 0.276 wt. %, and most preferably around 0.23 wt. % of the total formulation, effective amounts of inactive ingredients, the inactive ingredients selected from the group consisting of an excipient and surfactant for emulsifying and pH adjuster, and an optional additional active that contributes to pest control, with the balance water, all of the components of the formulation, both active and inactive falling under a 25(b) criteria of the EPA.
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 shows line drawing renditions of actual photographs of the inventive microemulsion as compared to other prior art solutions containing thyme oil for purposes of clarity comparisons.
  • DETAILED DESCRIPTION OF THE INVENTION
  • The microemulsion composition is formulated as a clear microemulsion and has the proper pH for effective cleaning and anti-bacterial capability.
  • The Table below shows the components of the formulation, the components CAS number, the range in terms of weight percent and grams for per gallon of water.
  • CAS percentage/ Range in
    25B-EPA 8.3 lb.-128 OZ gal water grams
    8007-46-3 Thyme oil active 0.23 to 0.24% 8.6 g to 9.0 g
    77-92-9 Citric Acid (granular only) 1.17 to 1.19% 44 g to 45 g
    151-21-3 SLS* cleaning agent 2.54 to 2.62% 96 g to 99 g
    68917-75-9 Wintergreen oil active 0.15 to .18%  6 g to 7 g
    67-63-0 Isopropanol (98%) 1.59 to 1.64  60 g to 62 g
    *SLS is sodium lauryl sulfate
  • The formulation is for the purpose of being a botanical EPA 25(b) antimicrobial cleaner/disinfectant and pesticide for agriculture applications, hospital and home uses, on animals, and general cleaning. Put another way, all of the components of the formula are found in the listing of active and inert or inactive ingredients found in the publications from the Environmental Protection Agency entitled “Active Ingredients Eligible for Minimum Risk Pesticide Products (Updated December 2015)” and “Inert Ingredients Eligible for FIFRA 25(b) Pesticide Products (Revised November 2016).” The publications are publicly available and shown below as Tables 1 and 2. Since the formulation is generally recognized as safe from the standpoint of EPA and FDA, it can be used in the following applications.
    • 25B-40cfr 180.940 a—Food contact surfaces in public eating places, dairy-processing equipment, and food processing equipment and utensils
    • 25B-40cfr 180.960—Any food use site
    • 40cfr 152.25 152.25 Exemptions for pesticides of a character not requiring FIFRA regulation, see 152.25(f).
  • TABLE 1
    Active Ingredients Eligible for Minimum Risk Pesticide Products
    (Updated December 2015)
    Label Display Nonfood Food
    Name Chemical Name CAS No. Specifications Use Use
    Castor oil Castor oil 8001-79-4 United States
    Pharmacopeia
    (U.S.P.) or
    equivalenit
    Cedarwood oil Cedarwood oil (China) 85085-29-6
    Cedarwood oil Cedarwood oil (Texas) 68990-83-0
    Cedarwood oil Cedarwood oil (Virginia) 8000-27-9
    Cinnamon Cinnamon N/A
    Cinnamon oil Cinnamon oil 8015-91-6
    Citric acid 2-Hydroxypropane-1,2,3- 77-92-9
    tricarboxylic acid
    Citronella Citronella N/A
    Citronella oil Citronella oil 8000-29-1
    Cloves Cloves N/A
    Clove oil Clove oil 8000-34-8
    Corn gluten meal Corn gluten meal 66071-96-3
    Corn oil Corn oil 8001-30-7
    Cornmint Cornmint N/A
    Cornmint oil Cornmint oil 68917-18-0
    Cottonseed oil Cottonseed oil 8001-29-4
    Dried blood Dried blood 68911-49-9
    Eugenol 4-Allyl-2-methoxyphenol 97-53-0
    Garlic Garlic N/A
    Garlic oil Garlic oil 8000.78.0
    Geraniol (2E)-3,7-Dimethylocta-2,6- 106-24-1
    dien-1-ol
    Geranium oil Geranium oil 8000-46-2
    Lauryl sulfate Lauryl sulfate 151-41-7
    Lemongrass oil Lemongrass oil 8007-02-1
    Linseed oil Linseed oil 8001-26-1
    Malic acid 2-Hydroxybutanedioic acid 6915-15-7
    Peppermint Peppermint N/A
    Peppermint oil Peppermint oil 8006-90-4
    2-Phenylethyl propionate 2-Phenylethyl propionate 122-70-3
    Potassium Potassium (2E,4E)-hexa-2,4- 24634-61-5
    sorbate dienoate
    Putrescent whole Putrescent whole 51609-52
    egg solids egg solids
    Rosemary Rosemary N/A
    Rosemary oil Rosemary oil 8000-25-7
    Sesame Sesame N/A Includes ground
    sesame plant
    Sesame oil Sesame oil 8008-74-0
    Sodium chloride Sodium chloride 7647-14-5
    Sodium lauryl Sulfuric acid monododecyl 151-21-3
    sulfate ester, sodium salt
    Soybean oil Soybean oil 8001-22-7
    Spearmint Spearmint N/A
    Spearmint oil Spearmint oil 8008-79-5
    Thyme Thyme N/A
    Thyme oil Thyme oil 800746-3
    White pepper White pepper N/A
    Zinc Zinc 7440-66-6 Zinc metal
    strips
    (consisting
    solely of zinc
    metal and
    impurities)
    If the tolerance exemption Then the inert ingredient may be included in a minimum risk product that
    appears in . . . is applied to:
    40 CFR180.910 Growing crops or raw agricultural commodities after harvest.
    40 CFR 180.920 Growing crops
    40 CFR 180.930 Animals
    40 CFR 180.940(a) Food-contact surfaces in public eating places, dairy-processing equipment, and
    food-processing equipment and utensils
    40 CFR 180.940(b) Dairy-processing equipment, and food-processing equipment and utensils
    40 CFR 180.940(c) Food-processing equipment and utensils
    40 CFR 180.950 Any food-use site
    40 CFR 180.960 Any food-use site
    40 CFR 180.1071 One of the 14 specified use patterns appropriate for peanuts, tree nuts, milk,
    soybeans, eggs, fish, crustaces, and wheat.
    40 CFR 180.1087 Residues of the biorational nematicide sesame stalk in or on the raw agricultural
    commodities identified in the tolerance exemption.
    40 CFR 180.1233 Potassium sorbate exemption from the requirement of a tolerance
    40 CFR 180.1251 Geraniol exemption from the requirement of a tolerance
  • TABLE 2
    Inert Ingredients Eligible for FIFRA 25(b) Pesticide Products
    (Revised November 2016)
    Tolerance
    Exemption
    Label Display Nonfood Food Citation 40
    Name Chemical Name CAS No. Use Use 180,xxx/1,2
    Acetyl tributyl citrate Citric acid, 2-(acetyloxy)-, 77-90-7 950(e)
    tributyl ester
    Agar Agar 9002-18-0
    Almond hulls Almond hulls N/A 950(b)
    Almond oil Oils, almond 800749-0
    Almond shells Almond shells N/A 950(b)
    alpha-Cyclodextrin alpha-Cyclodextrin 10016-20-3 950(e)
    Aluminatesilicate Aluminatesilicate 1327-36-2
    Aluminum magnesium Silicic acid, aluminum 1327-43-1
    silicate magnesium salt
    Aluminum potassium Silicic acid, aluminum 12736-96-8
    sodium silicate potassium
    Aluminum silicate Aluminum silicate 1335-30-4
    Aluminum sodium Silicic acid, aluminum sodium 1344-00-9 910
    silicate salt
    Aluminum sodium Silicic acid (H4 SiO4 ), 12003-51-9
    silicate aluminum sodium salt (1:1:1)
    Ammonium benzoate Benzoic acid, ammonium salt 1863-63-4
    Ammonium stearate Octadecanoic acid, ammonium 1002-89-7 910
    salt
    Amylopectin, acid - hydrolyzed, Amylopectin, acid - hydrolyzed, 113894-85-2 950(e)
    1-octenylbutanedioate 1-octenyibutanedieate
    Amylopectin, hydrogen Amylopectin, hydrogen 1- 125109-81- 950(e)
    1-oetadecenylbutanedioate octadecenylbutanedioate
    Animal glue Animal glue N/A 950(e)
    Ascorbyl palmitate Ascorbyl palmitate 137-66-6 910, 930
    Attapulgite-type clay Attapulgite-type clay 12174-11-7 910, 930
    Beeswax Beeswax 8012-89-3 950(e)
    Bentonite Bentonite 1302-78-9 910
    Bentonite, sodian Bentonite, sodian 85049-30-5
    beta-Cyclodextrin beta-Cyclodextrin 7585-39-9 950(e)
    Bone meal Bone meal 68409-75-6
    Bran Bran N/A 1071
    Bread crumbs Bread crumbs N/A 1071
    (+)-Butyl lactate Lactic acid, n-butyl ester, (S) 34451-19-9 950(e)
    Butyl lactate Lactic acid, n-butyl ester 138-22-7 950(e)
    Butyl stearate Octadecanoic acid, butyl aster 123-95-5 910
    Calcareous shale Calcareous shale N/A 910
    Calcite Calcite (Ca(CO3 )) 13397-26-7 910, 930
    Calcium acetate Calcium acetate 62-54-4
    Calcium acetate monohydrate Acetic acid, calcium salt, 5743-26-0
    monohydrate
    Calcium benzoate Benzoic acid, calcium salt 2090-05-3
    Calcium carbonate Calcium carbonate 471-34-1 910, 930
    Calcium citrate Citric acid, calcium salt 7693-13-2 950(e)
    Calcium octanoate Calcium octanoate 6107-56-8 910
    Calcium oxide silicate Calcium oxide silieate 12168-85-3
    (Ca3O(SiO4 ))
    Calcium silicate Silicic acid, calcium salt 1344-95-2 910, 930
    Calcium stearate Octadecanoic acid, calcium salt 1592-23-0 910, 930, 940(a)
    940(c)
    Calcium sulfate Calcium sulfate 7778-18-9
    Calcium sulfate dihydrate Calcium sulfate dihydrate 10101-41-4
    Calcium sulfate hemihydrate Calcium sulfate hemihydrate 10034-76-1
    Canary seed Canary seed N/A 950(b)
    Carbon Carbon 7440-44-0
    Carbon dioxide Carbon dioxide 124-38-9 910, 930
    Carboxymethyl cellulose Cellulose, carboxymethyl ether 9000-11-7
    Cardboard Cardboard N/A 930(e)
    Carnauba wax Carnauba wax 8015-86-9 950(e)
    Carob gum Locust bean gum 9000-40-2 950(e)
    Carrageenan Carrageenan 9000-07-1 910, 920, 930
    Caseins Caseins 9000-71-9
    Castor oil Castor oi1 8001-79-4 950(e
    Castor oil, hydrogenated Castor oil, hydrogenated 8001-78-3 950(c)
    Cat food Cat food N/A
    Cellulose Cellulose 9004-34-6 950(e)
    Cellulose acetate Cellulose acetate 9004-35-7 950(e)
    Cellulose, mixture with Cellulose, mixture with cellulose 51395-75-6 950(e)
    cellulose carboxymethyl carboxymethyl ether, sodium salt
    ether, sodium salt
    Cellulose, pulp Cellulose, pulp 65996-61-4 950(e)
    Cellulose, regenerated Cellulose, regenerated 68442-85-3 950(e)
    Cheese Cheese N/A 950(a) or 1073
    Chlorophyll a Chlorophyll a 479-63-8
    Chlorophyll b Chlorophyll b 519-62-0
    Citric acid Citric acid 77-92- 950(e)
    Citric acid, monohydrate Citric acid, monohydrate 5949-29-1 950(e)
    Citrus meal Citrus meal N/A 950
    Citrus pectin Citrus pectin 9000-69-5
    Citrus pulp Citrus pulp 68514-76-1 950(b)
    Clam shells Clam shells N/A
    Cocoa Cocoa 8002-31-1 950(a)
    Cocoa shell flour Cocoa shell flour N/A
    Cocoa shells Cocoa shells N/A 950(b)
    Cod-liver oil Cod-liver oil 8001-69-2 910
    Coffee grounds Coffee grounds 68916-18-7 950(e)
    Cookies Cookies N/A 950 or 1071
    Cork Cork 61789-98-8
    Corn cobs Corn cobs N/A 950(b)
    Cotton Cotton N/A
    Cottonseed meal Cottonseed meal 68424-10-2
    Cracked wheat Cracked wheat N/A 1071
    Decanoic acid, monoester Decanoic acid, monoester with 26402-22-2 910
    with 1,2,3-propanetriol 1,2,3-propanetriol
    Dextrins Dextrins 9004-53-9 950(e)
    Diglyceryl monooleate 9-Octadecenoic acid, ester with 49553-76-6 910
    1,2,3-propanetriol
    Diglyceryl monostearate 9-Octadecanetoic acid, monoester 12694-22-3 910
    with oxybis(propanediol)
    Dilaurin Dodecanoic acid, diester with 27638-00-2 910
    1,2,3-propanetriol
    Dipalmitin Hexadecanoic acid, diester with 26657-95-4 910
    1,2,3-propanetriol
    Dipotassium citrate Citric acid, dipotassium salt 3609-96-9 950(e)
    Disodium citrate Citric acid, disodium salt 144-33-2 950(e)
    Disodium sulfate Disodium sulfate decahydrate 7727-73-3
    Diatomaceous earth Kieselguhr; Diatomite (less than 61790-53-2 910, 930, 1017
    1% crystalline silica)
    Dodecanoic acid, monoester Dodecanoic acid, monoester with 27215-38-9 910
    with 1,2,3-proparietriol 1,2,3-proparietriol
    Dolomite Dolomite 16389-88-1 910
    Douglas fir bark Douglas fir bark N/A 920
    Egg shells Egg shells N/A
    Eggs Eggs N/A 1071
    (+)-Ethyl lactate Lactic acid, ethyl ester, (S) 687-47-8 950(e)
    Ethyl lactate Lactic acid, ethyl ester 97-64-3 950(e)
    Feldspar Feldspar 68476-25-5
    Ferric oxide Iron oxide (Fe2O3) 1309-37-1 910, 930
    Ferrous oxide Iron oxide (FeO) 1345-25-1 950(b)
    Fish meal Fish meal N/A 1071
    Fish oil Fish oil 8016-13-5
    Fuller's earth Fuller's earth 8031-18-3 910
    Fumaric acid Fumaric acid 110-17-8 950(e)
    gamma-Cyclodextrin gamma-Cyclodextrin 17465-86-0 950(e)
    Gelatins Gelatins 9000-70-8 950(e)
    Gellan gum Gellan gum 71010-52-1 950(e)
    Glue Glue (as depolymd, anima 68476-37-9
    collagen)
    Glycerin 1,2,3-Propanetriol 56-81-5 950(e)
    Glycerol monooleate 9-Octadecenoic acid (Z)-, 2,3- 111-03-5 910
    dihydroxypropyl ester
    Glyceryl dicaprylate Octanoic acid, diester with 1,2,3- 36354-80-0 910
    propanetriol
    Glyceryl dimyristate Tetradecanoic acid, diester with 53563-63-6 910
    1,2,3-propanetriol
    Glyceryl dioleate 9-Octadecenoic acid (9Z)-, diester 25637-84-7 910
    with 1,2,3-propanetriol
    Glyceryl distearate Octadecanoic acid, diester with 1323-83-7 910
    1,2,3-propanetriol
    Glyceryl monomyristate Tetradecanoic acid, monoester with 27214-38-6 910
    1,2,3-propanetriol
    Glyceryl monooctanoate Octanoic acid, monoester with 26402-26-6 910
    1,2,3- propanetriol
    Glyceryl monooleate 9-Octadecenoic acid (9Z)-, 25496-72.4 910, 930
    monoester with 1,2,3-propanetriol
    Glyceryl monostearate Octadecanoic add, monoester with 31566-31-1 910, 930
    1,2,3-propanetriol
    Glyceryl stearate Octadecanoic acid, ester with 11099-07-3 910
    1,2,3-propanetriol
    Granite Granite N/A 910
    Graphite Graphite 7782-42-5 910
    Guar gum Guar gum 9000.30.0 950(e)
    Gum Arabic Gum arabic 9000-01-5 910
    Gum tragacanth Gum tragacanth 9000-65-1
    Gypsum Gypsum 13397-24-5 910, 930
    Hematite Hematite (Fe2O3) 1317-60-8
    Humic acid Humic acid 1415-93-6 950(e)
    Hydrogenated Hydrogenated cottonseed oil 68334-00-9 950(c)
    Hydrogenated rapeseed Hydrogenated rapeseed oil 84681-71-0 950(c)
    Hydrogenated soybean Hydrogenated soybean oil 8016-70-4 950(c)
    Hydroxyethyl cellulose Cellulose, 2-hydroxyethyl ether 9004-62-0 950(e)
    Hydroxypropyl cellulose Cellulose, 2-hydroxypropyl ether 9004-64-2 950(e)
    Hydroxypropyl methyl Cellulose, 2-hydroxypropyl methyl 9004-65-3 950(e)
    cellulose ether
    Iron magnesium oxide Iron magnesium oxide (FeMgO4) 12068-86-9
    Iron oxide, hydrate Iron oxide (Fe2O3), hydrate 12259-21-1 910
    Iron oxide Iron oxide (Fe3O4) 1317-6-9 910
    Isopropyl alcohol 2-Propanol 67-63-0 950(e)
    Isopropyl myristate Isopropyl myristate 110-27-0 910, 930
    Kaolin Kaolin 1332-58-7 910, 930, 1180
    Lactose Lactose 63-42-3 950(a)
    Lactose monohydrate Lactose monohydrate 64044-51-5 950(a)
    Lanolin Lanolin 8006-54-0 950(e)
    Latex rubber Latex rubber N/A
    Lauric acid Lauric acid 143-07-7 950(e)
    Lecithins Lecithins 8002-43-5 950(e)
    Licorice extract Licorice extract 68916-41-6 950(e)
    Lime dolomitic Lime (chemical) dolomitic 12001-27-3 910
    Limestone Limestone 1314-65-3 910, 930
    Linseed oil Linseed oil 8001-26-1 950(e)
    Magnesium carbonate Carbonic acid, magnesium salt 546-93-0 910, 930
    (1:1)
    Magnesium benzoate Magnesium benzoate 553-70-8
    Magnesium oxide Magnesium oxide 1309-48-4 910, 940a, 940c
    Magnesium oxide silicate Magnesium oxide silicate 12207-97-5 9
    Magnesium silicate Magnesium silicate 1343-88-0 910
    Magnesium silicate hydrate Magnesium silicate hydrate 1343-90-4 910, 930
    Magnesium silicon Magnesium silicon oxide 14987-04-3
    Magnesium stearate Octadecanoic acid, magnesium salt 557-04-0 910
    Magnesium sulfate Magnesium sulfate 7487-88-9 910
    Magnesium sulfate Magnesium sulfate heptahydrate 10034-99-8 910
    heptahydrate
    Malic acid Malic acid 6915-15-7
    Malt extract Malt extract 8002-48-0 950(a)
    Malt flavor Malt flavor N/A 950(a)
    Maltodextrin Maltodextrin 9050-36-6 950(e)
    Methylcellulose Cellulose, methyl ether 9004-67-5 950(e)
    Mica Mica 12003-38-2 910
    Mica-group minerals Mica-group minerals 12001-26-2
    Milk Milk 8049-98-7 1071
    Millet seed Millet seed N/A 950(a)
    Mineral oil Mineral oil (U.S.P.) 8012-95-1 910, 930
    1-Monolaurin Dodecanoic acid, 2,3- 142-18-7 910
    dihydroxypropyl ester
    1-Monomyristin Tetradecanoic acid, 2,3- 589-68-4 910
    dihydroxypropyl ester
    Monomyristin Decanoic acid, diester with 1,2,3- 53998-07-1
    propanetriol
    Monopalmitin Hexadecanoic acid, monoester with 26657-96-5 910
    1,2,3-propanetriol
    Monopotassium citrate Citric acid, monopotassium salt 866-83-1 950(e)
    Monosodium citrate Citric acid, monosodium salt 18996-35-5 950(e)
    Montmorillonite Montmorillonite 1318-93-0 910, 930
    Myristic acid Myristic acid 544-63-8 910
    Nepheline syenite Nepheline sycnite 37244-96-5
    Nitrogen Nitrogen 7727-37-9
    Nutria meat Nutria meat N/A
    Nylon Nylon N/A
    Octanoic acid, potassium salt Octanoic acid, potassium salt 764-71-6 910
    Octanoic acid, sodium salt Octanoic acid, sodium salt 1984-06-1 910
    Oleic acid Oleic acid 112-80-1 910, 93
    Oyster shells Oyster shells N/A
    Palm oil Palm oil 8002-75-3 950(c)
    Palm oil, hydrogenated Palm oil, hydrogenated 68514-74-9 950(c)
    Palmitic acid Hexadecanoic acid 57-10-3 910
    Paper Paper N/A 950(e)
    Paraffin wax Paraffin wax 8002-74-2
    Peanut butter Peanut butter N/A 1071
    Peanut shells Peanut shells N/A 950(b)
    Peanuts Peanuts N/A 1071
    Peat moss Peat moss N/A
    Pectin Pectin 9000-69-5
    Perlite Perlite 130885-09-5
    Perlite, expanded Perlite, expanded 93763-70-3
    Plaster of paris Plaster of paris 26499-65-0
    Polyethylene Polyethylene 9002-88-4 910, 930
    Polyglyceryl oleate Polyglyceryl oleate 9007-48-1 910
    Polyglyceryl stearate Polyglyceryl stearate 9009-32-9 910, 930
    Potassium acetate Acetic acid, potassium salt 127-08-2
    Potassium aluminum Potassium aluminum silicate, 1327-44-2 910
    silicate, anhydrous anhydrous
    Potassium benzoate Benzoic acid, potassium salt 582-25-2
    Potassium bicarbonate Carbonic acid, monopotassium salt 298-14-6 950(e)
    Potassium chloride Potassium chloride 7447-40-7 950(e)
    Potassium citrate Citric acid, potassium salt 777849-6 950(e)
    Potassium humate Humic acids, potassium salts 68514-28-3 950(e)
    Potassium myristate Tetradecanoic acid, potassium salt 13429-27-1 910
    Potassium oleate 9-Octadecenoic acid (9Z)-, 143-18-0 910
    potassium
    Potassium ricinoleate 9-Octadecenoic acid, 12-hydroxy-, 7492-30-0
    monopotassium salt, (9Z, 12R)-
    Potassium sorbate Sorbic acid, potassium salt 24634-61-5 950(e)
    Potassium stearate Octadecanoic acid, potassium salt 593-29-3 1068
    Potassium sulfate Potassium sulfate 7778-80-5 910
    Potassium sulfate Sulfuric acid, monopotassium salt 7646-93-7
    1,2-Propylene carbonate 1,3-Dioxolan-2-one, 4-methyl- 108-32-7 950(e)
    Pumice Pumice 1332-09-8
    Red cabbage color Red cabbage color (expressed from N/A 950(e)
    edible red cabbage heads via a
    pressing process using only
    acidified water)
    Red cedar chips Red cedar chips N/A
    Red dog flour Red dog flour N/A
    Rubber Rubber 9006-04-6
    Sawdust Sawdust N/A
    Shale Shale N/A
    Silica, amorphous, fumed Silica, amorphous, fumed 112945-52-5 950(e)
    (crystalline free)
    Silica, amorphous, precipitate Silica, amorphous, precipitate and 7699-414 950(e)
    and gel gel
    Silica Silica (crystalline free) 7633.86 9
    Silica gel Silica gel 63231-67-4 950(e)
    Silica gel, precipitated, Silica gel, precipitated, crystalline- 112926-00-8 950(e)
    crystalline-free free
    Silica, hydrate Silica, hydrate 10279-57-9 950(e)
    Silica, vitreous Silica, vitreous 60676-86-0 950(e)
    Silicic acid, magnesium salt Silicic acid (H2SiO3), magnesium 13776-74-41 910, 930
    salt
    Soap Soap (The water soluble sodium or N/A 950(e)
    potassium salts of fatty acids
    produced by either the
    saponification of fats and oils, or
    the neutralization of fatty acid)
    Soapbark Quillaja saponin 1393-03-9 950(e)
    Soapstone Soapstone 308076-02-0 910, 930
    Sodium acetate Acetic acid, sodium salt 127-09-3 950(e)
    Sodium alginate Sodium alginate 9005-38-3 950(e)
    Sodium benzoate Benzoic acid, sodium salt 532-32-1 950(c)
    Sodium bicarbonate Sodium bicarbonate 144-55-8 950(e)
    Sodium carboxymethyl Cellulose, carboxymethyl ether, 9004-32-4 950(e)
    cellulose sodium
    Sodium chloride Sodium chloride 7647-14-5 950(e)
    Sodium citrate Sodium citrate 994-36-5 950(e)
    Sodium humate Humic acids, sodium salts 68131-04-4 950(e)
    Sodium oleate Sodium oleate 143-19-1 910
    Sodium ricinoleate 9-Octadecenoic acid, 12-hydroxy-, 5323-95-5
    monosodium salt, (9Z,12R)-
    Sodium stearate Octadecanoic acid, sodium salt 822-16-2 910
    Sodium sulfate Sodium sulfate 7757-82-6 910, 930
    Sorbitol D-glucitol 50-70-4 950(e)
    Soy protein Soy protein N/A
    Soya lecithins Lecithins, soya 8030-76-0 950(e)
    Soybean hulls Soybean hulls N/A 950(b)
    Soybean meal Soybean meal 68308-36-1 1071
    Soybean, flour Soybean, flour 68513-95-1 1071
    Stearic acid Octadecanoic acid 57-11-4 910, 930
    Sulfur Sulfur 704-34-9
    Syrups, hydrolyzed Syrups, hydrolyzed starch, 68425-17-2 950(e)
    starch, hydrogenated hydrogenated
    Tetraglyceryl monooleate 9-Octadecenoic acid (9Z)-, 71012-10-7
    monoester with tetraglycerol
    Tricalcium citrate Citric acid, calcium salt (2:3) 813-94-5 950(e)
    Triethyl citrate Citric acid, triethyl ester 77-93-0 950(e)
    Tripotassium citrate Citric acid, tripotassium salt 866-84-2 950(e)
    Tripotassium citrate Citric acid, tripotassium salt 6100-05-6 950(e)
    monohydrate monohydrate
    Trisodium citrate Citric acid, trisodium salt 68-04-2 950(e)
    Trisodium citrate Citric acid, trisodium salt, 6132-04-3 950(e)
    dehydrate dehydrate
    Trisodium citrate Citric acid, trisodium salt, 6858-44-2 950(e)
    pentahydrate pentahydrate
    Ultramarine blue C.I. Pigment Blue 29 57455-37-5 950(c)
    Urea Urea 57-13-6 950(e)
    Vanillin Benzaldehyde, 4-hydroxy-3- 121-33-5 950(e)
    methoxy-
    Vermiculite Vermiculite 1318-00-9 910
    Vinegar Vinegar (maximum 8% acetic acid 8028-52-2 950(a)
    in solution)
    Vitamin C L-Ascorbic acid 50-81-7 950(e)
    Vitamin E Vitamin E 1406-18-4 910
    Walnut flour Walnut flour N/A
    Walnut shells Walnut shells N/A 950(b)
    Wheat Wheat N/A 1071
    Wheat flour Wheat flour N/A 1071
    Wheat germ oil Wheat germ oil 8006-95-9 950(c)
    Wheat oil Oils, wheat 68917-73-7 1071
    Whey Whey 92129-90-3 1071
    White mineral oil White mineral oil (petroleum) 8042-47-5 910, 930
    Wintergreen oil Wintergreen oil 68917-75-9
    Wollastonite Wollastonite (Ca(SiO3)) 13983-17-0
    Wool Wool N/A
    Xanthan gum Xanthan gum 11138-66-2 950(e)
    Yeast Yeast 68876-77-7 950)a)
    Zeolites Zeolites (excluding erionite (CAS 1318-02-1 910
    Reg. No. 66733-21-9))
    Zeolites, NaA Zeolites, NaA 68989-22-0
    Zinc iron oxide Zinc iron oxide 12063-19-3
    Zinc oxide Zinc oxide (ZnO) 1314-13-2 910, 930
    Zinc stearate Octadecanoic acid, zinc salt 557-05-1 920, 930
    Then the inert ingredient may be included in a
    If the tolerance appears in . . . minimum risk product that is nulled to:
    40 CFR 180.910 Growing crops or raw aggicultural commodities after harvest.
    40 CFR 180.920 Growing crops
    40 CFR 180.930 Animals
    40 CFR 180.940(a) Food-contact surfaces in public eating places, dairy-processing equipment,
    and food-processing equipment and utensils
    40 CFR 180.940(b) Dairy-processing equipment, and food-processing equipment and utensils
    40 CFR 180.940(c) Food-processing equipment and utensils
    40 CFR 180.950 Any food-use site
    40 CFR 180.960 Any food-use site
    40 CFR 180.1071 One of the 14 specified use patterns appropriate for peanuts, tree nuts, milk,
    soybeans, eggs, fish, crussacea, and wheat,
    2/This guidance does not create any binding requirements, although it refers to existing statutory and regulatory requirements and guidance. The guidance is not intended to and cannot be relied on to create rights, substantive or procedural, enforceable by any party in litigation with the United States, The producer is responsible to carefully read the criteria and make an evaluation of how the product meets (or does not meet) the criteria for the minimum risk exemption at 40 CFR 152.25(f) and tolerance and tolerance exemptions at 40
    CFR 180.
  • The microemulsion is advantageous in that it says in solution and does not require constant or intermittent mixing or shaking.
  • The microemulsion also does not employ any heavy metals or thyme oil derived from a petroleum product.
  • The formulation can also include fresh mint, lemon grass, anise or another other oil that falls under the EPA 25(b) designation to impart an odor is desired.
  • The microemulsion can be applied as a solution based on the above proportions or it can be further diluted for a particular application.
  • The microemulsion is also biodegradable and is suitable for use on glass, stainless steel, stone, wood, as a mold cleaner on porous and non-porous surfaces, and on animals to discourage pests on plants to help prevent molds and pests.
  • The following Table 3 shows the ingredients of a preferred formulation in terms of the ingredients intended uses.
  • TABLE 3
    Item CAS Category and function
    Citric Acid from 77-92-9 Anti-microbial for mold
    dissolved food grade 25(b) control and pH adjustment
    granules
    Isopropanol (98%) 67-63-0 excipient
    25(b)
    thyme 8007-46-3 Active ingredient/pest
    25(b) control
    Wintergreen 68917-75-9 Pest control
    25(b)
    SLS 151-21-3 surfactant
    25(b)
    Miscellaneous
    Water 7732-18-5 distilled or potable
    pH range 6-8 pH
    color clear to light amber
    Clarity (FTU) 1.5 to 4.0.
  • Shown below is another rendition of a preferred formulation of the invention entitled as follows: BAC (FIFRA 25b) Botanical Antimicrobial Cleaner (BAC), disinfectant, and pesticide for agriculture and hospitals, homes, animal, cleaning and more (FIFRA 25b)
  • TABLE 4
    128 ounces or 3764.8 grams 8.3 to 8.4 pounds
    CAS number and
    functionality weight Weight percentage range
    Citric Acid from 77-92-9 44 grams to 45 grams 1.17% to 1.19%
    granular only Antimicrobial for .097 lb.
    Dissolve in warm mold control
    water
    Thyme oil 8007-46-3 8.6 gram to 9 grams .23% to .24%
    Active .0189 lb.
    IP 98% 67-63-0 60 grams to 62 grams 1.59% to 1.64%
    Excipient .132 lb. or 2.11
    ounces
    Wintergreen 68917-75-9 6 grams to 7 grams .15% to .18%
    Pest control .0132 lb.
    SLS 151-21-3 96 grams to 99 grams 2.54% to 2.62%
    surfactant 3.2 ounces
    .211 lb.
    Water 7732-18-5 3550 grams 95.91% to 94.13%
    Applicable regulations include 40 CFR 180.940(a), 40 CFR 152.25(f), 40 CFR 180.960.
    25(b) Active @.23% CAS Number 8007-46-3 white thyme oil (whole plant).
    Stays in solution no mixing or shaking, no heavy metals, no petroleum based thyme oil.
    USDA certified organic wintergreen oil ingredient (whole plant) Fresh mint or lemon grass or anise or any 25 (b) essential oil for odor.
    Antimicrobial cleaner disinfectant.
    (GRAS) Generally recognized as Safe (GRAS) - FIFRA 25B Active 40 CFR 152.25(f)(1) 0.23 wt. percent white thyme oil as one active ingredient.
    40 CFR 180.940(a), 40 CFR 152.25(f), 40 CFR 180.960, 40 CFR 152.25(f). Any food use site, food processing, remediation, dairies, animals, equipment.
    Bio-degradable, mold cleaner, glass, stainless, wood, stone.
    Can be applied to growing crops and harvested crops as a disinfectant and pesticide that can be a dilute product or a ready to use and is FIFRA 25(b) compliant and a disinfectant.
  • The microemulsion is a clear, thermodynamically stable, isotropic liquid mixtures of oil, water and one or more surfactants. The aqueous phase may contain salt(s) and/or other ingredients, and the oil may actually be a complex mixture of different hydrocarbons and olefins. Microemulsions are contrasted with emulsions in that microemulsions form upon simple mixing of the components and do not require high shear conditions generally used in the formation of ordinary emulsions. The three basic types of microemulsions are direct (oil dispersed in water, o/w), reversed (water dispersed in oil, w/o) and bicontinuous.
  • In ternary systems such as microemulsions, where two immiscible phases (water and oil) are present with a surfactant, the surfactant molecules may form a monolayer at the interface between the oil and water, with the hydrophobic tails of the surfactant molecules dissolved in the oil phase and the hydrophilic head groups in the aqueous phase.
  • Examples of surfaces that can be cleaned with the formulation include any hard surface in need of cleaning, for example, walls, floors, ceiling, countertops, fixtures, sidings, vehicles, metals, plastics of any kind, woods, composites, and the like. Virtually any hard surface in need of cleaning, and/or mold or bacteria reduction or elimination is a candidate for use with the inventive formulation.
  • Again, the formulation has a number of advantages over other thyme-based cleaning products. First, the microemulsion is a very clear product as evidenced by its formazin turbidity unit (FTU) of 1.5 to 4.0. Other thyme-based cleaning products do not have such clarity, see for example, the discussion below regarding clarity of the inventive microemulsion as compared to other prior art products as shown in the sole figure.
  • Second, as the formulation only uses 25(b) components, it is an all-natural product. Other thyme-based products have non-25(b) components, e.g., copper sulfate, or the thyme is not naturally based (it is derived from a petroleum product), and these kinds of products cannot be characterized as a 25(b) formulation.
  • As the formulation is a totally natural 25(b) product, it also has applications for plants, growing crops, animals, food contact surfaces, dairy processing equipment, food processing equipment, any food use site, see 40 CFR 180. 940(a)/960 and 40 CFR 152.25(f).
  • It should be understood that the percentages of the various components can range from 15%, more preferably 10% below and above the preferred precise formulation noted in the Tables above. The active ingredients of the microemulsion formulation are readily available using their CAS number.
  • For example, for the active ingredient, the thyme oil percentage could range from about 0.195 to about 0.276% and more preferably from about 0.207 to about 0.264%. Thyme oil is generally recognized as safe (GRAS) and is listed in 40 CFR 152.25(f).
  • The wintergreen oil could range from about 0.128 to about 0.207%, and more preferably from about 0.135 to about 0.198%.
  • The SLS surfactant could range from about 2.159 to about 3.013%, and more preferably from about 2.286 to about 2.882%.
  • As noted above, thyme and wintergreen oils are active ingredients providing anti-fungal/anti-microbial functions/pest control.
  • While SLS is disclosed as a preferred surfactant for use in the microemulsion, other surfactants similar to SLS can be used that satisfy the 25(b) criteria of the Environmental Protection Agency, which is attached herewith both for active and inactive ingredients.
  • For the inactive or inert ingredients, the citric acid could range from about 0.994 to about 1.358% and more preferably from about 1.053 to about 1.309%. The citric acid also can function as an antimicrobial for mold control. The citric acid is provided as citric acid anhydrous fine granules, which are readily available commercially. The granules are dissolved in warm water when making the microemulsion.
  • The purpose of the isopropanol is for microemulsification and the preferred concentration is 98% but other concentrations could be used. The isopropanol can range from about 1.351 to about 1.886% and more preferably from about 1.431 to about 1.804%. The pH of the formulation should be adjusted to between 6.0 and 8.0. The pH is controlled by the addition of the citric acid. Citric acid is a weak organic acid that has the chemical formula C6H8O7. It occurs naturally in citrus fruits. In biochemistry, it is an intermediate in the citric acid cycle, which occurs in the metabolism of all aerobic organisms.
  • More than a million tons of citric acid are manufactured every year. It is used widely as an acidifier, as a flavoring and a chelating agent.
  • A citrate is a derivative of citric acid; that is, the salts, esters, and polyatomic anion found in solution. An example of the former, a salt is trisodium citrate; an ester is triethyl citrate. When part of a salt, the formula of the citrate ion is written as C6H5O3− 7 or C3H5O(COO)3− 3. Citric acid is widely used as an acidulant in creams, gels, and liquids of all kinds. In its use in foods and dietary supplements, it may be classified as a processing aid if the purpose it was added was for a technical or functional effect (e.g. acidulant, chelator, viscosifier, etc. . . . ) for a process. If it is still present in insignificant amounts, and the technical or functional effect is no longer present, and can be exempted from labeling <21 CFR § 101.100(c)>. Although granular citric acid is a preferred component for mold control and pH adjustment, another or additional 25(b) pH adjuster and/or mold control agent can be employed as would be known in the art to obtained the desired end range for the pH.
  • The thyme oil or thymus vulgaris is made up of a number of micro-constituents. The following table lists the breakdown of micro-constituents contained in the thyme oil used in the formulation in terms micro-constituent %.
  • α-thujene 2.84 thymol methyl ether 1.78
    α-pinene 2.97 thymol 46.21
    β-pinene 0.71 carvacrol 2.44
    octan-1-en-3-ol 0.48 terpinyl acetate 0.68
    myrcene 3.45 eugenol 0.1
    α-phellandrene 0.42 β-bourbonene 0.09
    α-terpinene 2.69 β-elemene 0.14
    p-cymene 9.91 methyl eugenol 0.21
    limonene 1.23 β-caryophyllene 1.64
    1,8-cineole 1.96 β-copaene 0.16
    γ-terpinene 14.08 α-humulene 0.17
    cis-sabinen hydrate 0.19 germacrene D 0.4
    terpinolene 0.13 β-bisabolene 0.33
    linalool 3.99 27.331 1520 δ-cadinene 0.14
    terpinene-4-ol 0.25 28.897 1581 caryophyllene oxide 0.21
  • As the formulation is a food grade formulation, all components should be of food grade quality.
  • Applications of the microemulsion on surfaces are believed to provide anti-bacterial efficacy comparable to thyme oil-based cleaners presently on the market.
  • In applying the microemulsion formulation for cleaning purposes, any kind of an application can be used. Examples include spraying, brushing, using rags, paper towels, and the like. Different kinds of applications could be combined as well. In fact, the formulation can be applied in virtually any way for cleaning and disinfecting a desired surface, whether the surface is large or small.
  • The formulation is especially useful for treating plants and a preferred method of application is spraying. The microemulsion can be applied to growing crops and harvested crops as a disinfectant and pesticide, either in a concentration according to one or more of the formulations described herein or in a more diluted form. For example, a formulation according to Tables above could be further diluted with distilled or deionized water for application. Typical dilution rates would be 1 part formulation to 10 parts water or 1 part formulation to 100 parts water. These dilution rates are only examples and other dilution rates could be used, e.g., 1:5, 1:20, 1:25, 1:50, and the like.
  • Another example of the formulation for a gallon of water would be the following.
  • CAS percentage/ Range in
    25B-EPA 8.3 lb.-128 OZ gal water grams
    8007-46-3 Thyme oil active 2.2 to 2.4% 86 g to 90 g
    77-92-9 Citric Acid (from 11.7 to 11.9% 440 g to 450 g
    dissolved granular
    only)
    151-21-3 SLS* cleaning agent 25.4 to 26.2% 960 g to 990 g
    68917-75-9 Wintergreen oil 1.5 to 1.8% 60 g to 70 g
    67-63-0 Isopropanol (98%) 15.90 to 16.40   600 g to 620 g
    *SLS is sodium lauryl sulfate
  • For a gallon of microemulsion formulation, the components are weighed out in their respective percentages and mixed with water. The percentages are adjusted depending on the volume of water used when making the formulation.
  • As noted above, a significant advantage of the invention is being able to provide a cleaning product that falls under the EPA's minimum risk pesticide guidelines and is exempt from required registration under the Federal Insecticide, Fungicide, and Rodenticide Act, the exemption found in 40 CFR 152.25(f), which is incorporated by reference in its entirety. Other advantages include the ability to provide a cleaner that is crystal clear for application and have disinfectant and anti-microbial/anti-fungal properties.
  • What is remarkable about the formulation is that it is a first of its kind in terms of a thyme-based microemulsion that is completely compliant with FIFRA 25(b) as every ingredient in it falls under 25(b); there are no metals and no synthetic thyme products. As importantly, the formulation is a disinfectant 25(b) thyme oil product which could be EPA registered for use on growing crops and harvested crops as well as a disinfectant and pesticide, that could also be EPA 25(b) registered as a disinfectant on any food use site processing facilities, and for cleaning and disinfecting in hospital, schools, home, workplaces, etc.
  • One particular application of the formulation as a pesticide is to treat citrus greening disease, which is a disease of citrus caused by a vector-transmitted pathogen, by applying the formulation to the citrus plants or trees affected by the disease. Asian citrus psyllid, Diaphorina citri, is a sap-sucking, hemipteran bug in the family Psyllidae. It is an important pest of citrus, as it is one of only two confirmed vectors of the serious citrus greening disease. African citrus psyllid, Trioza erytreae, also known as the two-spotted citrus psyllid, is another recognized vector of the citrus greening disease.
  • While a composition is disclosed with a specific surfactant (SLS), a specific antimicrobial for mold and pH adjuster (citric acid), alcohol as an excipient, and a pest control additive (wintergreen oil), an inventive aspect of the formulation is that it only contains all 25(b) components (including both active and inactive ingredients), has a high active content in terms of thyme oil, i.e., 0.15 to 0.30 wt. % and more preferably, 0.195 to 0.276 wt. %, so that its antimicrobial properties are excellent, and the formulation is a crystal clear microemulsion. Thus, the inactive ingredients could vary from the specific ones disclosed providing that substitute inactives are still 25(b) compliant and function in a similar manner as the replaced inactive ingredients.
  • In this regard, Applicant compared the inventive formulation with other formulations containing thyme oil as an active to show the difference in clarities between the different formulations. The FIG. 1 is a representation of a photograph taken of three different formulations for comparison in terms of the clarity of the formulations. The formulation on the left in the FIG. 1 is a clear microemulsion of the invention with 0.23 wt. % thyme oil and all other components or inert ingredients in this formulation are 25(b) components. The middle formulation is not made up of only 25(b) components, (meaning there are other components that would not be listed as a 25(b) component from the EPA perspective. The middle formulation also has an active content of 0.23% thyme oil, and is not clear at all. The formulation on the right has only 0.05% active content by weight of thyme oil and also includes other inert ingredients that are not 25(b) classified. The clarity of the formulation on the right is much better than the middle formulation, but it is still cloudy and not nearly as clear as the inventive formulation on the left. Also, the microbiocidal efficacy of the formulation on the right is much less than either of the two other formulations due to the vastly reduced thyme oil content. Thus, the formulation on the right, even with its better clarity, is not as effective as the antimicrobial formulation of the invention.
  • An example of this embodiment of the inventive botanical antimicrobial formulation comprising a clear microemulsion is where the microemulsion consists of thyme oil as an active ingredient in an amount ranging from 0.15 to 0.30 wt. % of the formulation, more preferably 0.195 to 0.276 wt. %, and most preferably around 0.23 wt. % of the total formulation, effective amounts of inactive ingredients, the inactive ingredients selected from the group consisting of an excipient and surfactant for emulsifying and pH adjuster, and an optional additional active that contributes to pest control, with the balance water, all of the components of the formulation, both active and inactive, falling under a 25(b) criteria of the EPA.
  • The microemulsion can also be used for the removal of dust (dust suppression) and/or disrupt and/or remove bioaerosol particles contained the air by introducing the microemulsion in the air so that it is dispersed and can interact with the dust and/or bioaerosol particles. More particularly, the microemulsion can be dispersed or sprayed into the air in a location where it would be desired to suppress dust and/or remove/disrupt bioaerosol particles in the air in the location of spraying. The location can be a space in a structure or can be outside where dust suppression and/or bioaerosol particle removal is needed. Examples of spaces that could be treated with the inventive formulation for dust suppression and/or bioaerosol particle removal would be hospitals, or laboratories that require cleanliness and a minimum of bacteria. Dust suppression locations could be in construction sites or zones, either inside or outside. In certain applications, only dust is a problem that would need suppression or only bioaerosol particles would be the problem needing treatment. In other situations, both dust and bioaerosols may be present where a location having both needs treatment.
  • The step of introducing the formulation into a given space can be done with any known spraying or dispersing device, from a handheld sprayer, a sprayer designed to be carried by a user using a sling or harness, hvlp or ulvp sprayers, foggers, misters, or any kind of commercial or industrial sprayer that would be capable of treating a large volume of air at a given location.
  • In terms of introducing the microemulsion into the air for dust suppression and/or treating of bioaerosol particles, similar types of dilution rates of the formulation can be used as detailed above for the cleaning, disinfecting and plant treatment regimens. An effective amount of microemulsion formulation should be that that would drop out a substantial amount of the dust airborne in a given location as well as treating bioaerosols so that they also drop out of the air or at least become disrupt by cellular damage and the like as described above.
  • Typical rates for treat an area for dust suppression and bioaerosol treatment as well as other treatment rates are as follows:
  • bioaerosol applications 0.2 to 1 ounce per cubic meter;
  • plant and animal applications .2 to 1 ounce per cubic meter; and
  • all other application 1 to 3 ounces per sq. ft.
  • The formulation has any number of uses, which include using it on plants as a pest control, using it as an insect repellant (flea , mosquito and tick repellant for example), a cleaner, an antimicrobial cleaner, a disinfectant, a deodorizer, a fly repellant for animals, a stainless and glass surface cleaner, a laundry detergent, a carpet cleaner, and a stain remover.
  • The formulation, which is includes as an active ingredient is directly from whole essential oil of white thyme and is non-toxic, non-corrosive, non-irritating, biodegradable, falling under the EPA GRAS (generally regarded as safe) category, has been shown to be diluted up to 160 times before it loses its effectiveness against salmonella and chicken isolate CP #6 of clostridium perfringens and up to 320 times for turkey isolate of clostridium perfringens and similar results would be expected for other and similar bacteria and the like.
  • As such, an invention has been disclosed in terms of preferred embodiments thereof which fulfills each and every one of the objects of the present invention as set forth above and provides a new and improved thyme oil and surfactant containing microemulsion formulation that can be used for disinfection and/or cleaning of surfaces, treatment of animals and pets for pest control, and for dust suppression and bioaerosol particle disruption and removal from the air.
  • Of course, various changes, modifications and alterations from the teachings of the present invention may be contemplated by those skilled in the art without departing from the intended spirit and scope thereof. It is intended that the present invention only be limited by the terms of the appended claims.

Claims (14)

1. A microemulsion comprising, in weight percent:
thyme oil in an amount ranging from about 0.195 to about 0.276%;
wintergreen oil in an amount ranging from about 0.128 to about 0.207%;
at least one 25(b) surfactant in an amount ranging from about 2.159 to about 3.015%;
granular citric acid in an amount ranging from about 0.994 to about 1.358%;
isopropanol in an amount ranging from about 1.351 to about 1.886%;
water, the weight percentages based on the weight of a gallon of water, or 8.3 lbs.
2. The microemulsion of claim 1, wherein the pH is between 6.0 and 8.0.
3. The microemulsion of claim 1, wherein the surfactant is sodium lauryl sulfate.
4. The microemulsion of claim 1, wherein all components are listed on the EPA active and inactive ingredients eligible for minimum risk pesticide products.
5. A method of cleaning or disinfecting a surface comprising applying the microemulsion of claim 1 to the surface.
6. A method of treating an animal or plants for at least pest control comprising applying an effective amount of the microemulsion of claim 1 to the plants or the animal.
7. The method of claim 5, wherein the surface comprises a metal, plastic, wood, masonry, composite material, and the like.
8. The method of claim 5, wherein the microemulsion is applied using one or more of brushing, wiping using an implement like a sponge, rag, paper towel, or the like, spraying, and brooming.
9. The method of claim 6, wherein the microemulsion is applied using one or more of brushing, wiping using an implement like a sponge, rag, paper towel, or the like, spraying, and brooming.
10. The method of claim 7, wherein the microemulsion is applied using one or more of brushing, wiping using an implement like a sponge, rag, paper towel, or the like, spraying, and brooming.
11. (canceled)
12. (canceled)
13. The method of claim 6, wherein the treatment further comprises treating citrus plants suffering from citrus greening disease.
14. A botanical antimicrobial cleaner formulation comprising a clear microemulsion, the microemulsion consisting of thyme oil as an active ingredient in an amount ranging from 0.15 to 0.30 wt. % of the formulation, more preferably 0.195 to 0.276 wt. %, and most preferably around 0.23 wt. % of the total formulation, effective amounts of inactive ingredients, the inactive ingredients selected from the group consisting of an excipient and surfactant for emulsifying and pH adjuster, and an optional additional active that contributes to pest control, with the balance water, all of the components of the formulation, both active and inactive falling under a 25(b) criteria of the EPA.
US17/694,923 2018-07-30 2022-03-15 All purpose cleaner, disinfectant, dust suppressant, bioaerosol particle remover, and pesticide microemulsion formulation and method of use Pending US20220202020A1 (en)

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