DE91712C - - Google Patents
Info
- Publication number
- DE91712C DE91712C DENDAT91712D DE91712DA DE91712C DE 91712 C DE91712 C DE 91712C DE NDAT91712 D DENDAT91712 D DE NDAT91712D DE 91712D A DE91712D A DE 91712DA DE 91712 C DE91712 C DE 91712C
- Authority
- DE
- Germany
- Prior art keywords
- formaldehyde
- polymerization
- commercially available
- solution
- gaseous
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- WSFSSNUMVMOOMR-UHFFFAOYSA-N formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims description 19
- 239000008098 formaldehyde solution Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 238000006116 polymerization reaction Methods 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims 1
- 150000001805 chlorine compounds Chemical class 0.000 claims 1
- 230000000249 desinfective Effects 0.000 description 6
- 238000004659 sterilization and disinfection Methods 0.000 description 5
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- BGJSXRVXTHVRSN-UHFFFAOYSA-N 1,3,5-Trioxane Chemical group C1OCOCO1 BGJSXRVXTHVRSN-UHFFFAOYSA-N 0.000 description 1
- UXVMQQNJUSDDNG-UHFFFAOYSA-L cacl2 Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229920002866 paraformaldehyde Polymers 0.000 description 1
- 239000001103 potassium chloride Substances 0.000 description 1
- 235000011164 potassium chloride Nutrition 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION 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
- A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
- A01N59/08—Alkali metal chlorides; Alkaline earth metal chlorides
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION 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
- A01N35/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having two bonds to hetero atoms with at the most one bond to halogen, e.g. aldehyde radical
- A01N35/02—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having two bonds to hetero atoms with at the most one bond to halogen, e.g. aldehyde radical containing aliphatically bound aldehyde or keto groups, or thio analogues thereof; Derivatives thereof, e.g. acetals
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
- C07C45/78—Separation; Purification; Stabilisation; Use of additives
- C07C45/86—Use of additives, e.g. for stabilisation
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- Plant Pathology (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Dentistry (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Environmental Sciences (AREA)
- Agronomy & Crop Science (AREA)
- Pest Control & Pesticides (AREA)
- Inorganic Chemistry (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Description
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
PATENTSCHRIFTPATENT LETTERING
KLASSE 12: Chemische Verfahren und Apparate.CLASS 12: Chemical processes and apparatus.
Verfahren zur Verhütung der Polymerisation von Formaldehyd.Process for preventing the polymerization of formaldehyde.
Patentirt im Deutschen Reiche vom 21. Mai 1896 ab.Patented in the German Empire on May 21, 1896.
Es ist bekannt, dafs gasförmiger Formaldehyd ein ausgezeichnetes Desinfectionsmittel ist und bereits vielfach verbreitete Anwendung zu Desinfectionszwecken findet. Der praktischen Anwendung stand jedoch bis jetzt stets ein Umstand hindernd im Wege, welchen zu vermeiden Zweck der vorliegenden Erfindung ist.It is known that gaseous formaldehyde is an excellent disinfectant and is already widely used for disinfection purposes. Practical application however, until now there has always been a hindrance which the purpose of the present invention is to avoid.
Zur Bereitung des gasförmigen Formaldehyds dient die handelsübliche wässerige Formaldehydlösung, welche in geeigneten Apparaten erhitzt wird. Es ist nun bei diesem Verfahren unmöglich , eine partielle Polymerisation des Formaldehyds zu vermeiden, ein Umstand, der sich leicht durch die beim Erhitzen gebildeten und für die Desinfectionszwecke unbrauchbaren Polymerisationsproducte Paraformaldehyd (CH2O)2 oder Trioxymethylen (CH2 OJ3 nachweisen lä'fst. Auf diese Art ist stets zu fürchten, dafs die Desinfection nicht genügend praktisch und nicht energisch genug ausgeführt werde.The commercially available aqueous formaldehyde solution, which is heated in suitable apparatus, is used to prepare the gaseous formaldehyde. With this process it is impossible to avoid partial polymerisation of the formaldehyde, a circumstance which can easily be demonstrated by the polymerisation products paraformaldehyde (CH 2 O) 2 or trioxymethylene (CH 2 OJ 3 which are formed during heating and which are unusable for disinfection purposes). fst. In this way it is always to be feared that the disinfection is not carried out sufficiently practically and not energetically enough.
Erfinderin hat gefunden, dafs diese Polymerisation sich leicht durch ein sehr einfaches Mittel" gänzlich vermeiden läfst. Zu diesem Zweck verfährt man demgemäfs nach vorliegender Erfindung wie folgt:The inventor has found that this polymerization can easily be carried out by a very simple one Avoid means entirely. To this one Purpose one proceeds accordingly according to the present invention as follows:
Man löst in 1 1 der käuflichen Formaldehydlösung ca. 15 bis 30 g eines Chlorids der Erdalkalien bezw. Alkalien (Chlorcalcium, Chlornatrium oder Chlorkalium) und verwendet diese Lösung in genau derselben Weise wie den gewöhnlichen handelsüblichen Formaldehyd zu den vorerwähnten Desinfectionszwecken.Approx. 15 to 30 g of an alkaline earth chloride are dissolved in 1 liter of the commercially available formaldehyde solution respectively Alkalis (calcium chloride, sodium chloride or potassium chloride) and uses them Solution in exactly the same way as ordinary commercial formaldehyde the aforementioned disinfection purposes.
Dieses einfache Verfahren, welches die Polymerisation des Formaldehyds durchaus verhindert, erlaubt eine vollständige und äufserst wirkungsvolle Anwendung des Formaldehyds zu Desinfectionszwecken.This simple process, which completely prevents the polymerisation of formaldehyde, allows a complete and extremely effective use of formaldehyde for disinfection purposes.
Claims (1)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE91712C true DE91712C (en) |
Family
ID=363313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT91712D Active DE91712C (en) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE91712C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030005613A1 (en) * | 2001-06-29 | 2003-01-09 | Gleekel Mack Daniel | Magnetic-backed clock award |
-
0
- DE DENDAT91712D patent/DE91712C/de active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030005613A1 (en) * | 2001-06-29 | 2003-01-09 | Gleekel Mack Daniel | Magnetic-backed clock award |
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