AU8909598A - Compositions comprising iron chelates - Google Patents
Compositions comprising iron chelates Download PDFInfo
- Publication number
- AU8909598A AU8909598A AU89095/98A AU8909598A AU8909598A AU 8909598 A AU8909598 A AU 8909598A AU 89095/98 A AU89095/98 A AU 89095/98A AU 8909598 A AU8909598 A AU 8909598A AU 8909598 A AU8909598 A AU 8909598A
- Authority
- AU
- Australia
- Prior art keywords
- solution
- iron
- chelated
- water
- grams
- 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.)
- Abandoned
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
- C05D9/00—Other inorganic fertilisers
- C05D9/02—Other inorganic fertilisers containing trace elements
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G5/00—Fertilisers characterised by their form
- C05G5/20—Liquid fertilisers
- C05G5/23—Solutions
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Fertilizers (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Description
WO 99/08982 PCT/US98/16994 COMPOSITIONS COMPRISING IRON CHELATES Field of the Invention The present invention is generally about solubilization of iron ions in aqueous systems. A specific implementation of the invention is in preparing 5 solubilized chelated iron to crops in an easily manageable form. Background of the Invention The use of synthetic phenolic chelating agents for solubilizing iron is a well known practice in aqueous systems buffered to pH values higher than neutral. In the environments of hard water being buffered by carbonates or bicarbonates, 10 a constant value of pH above 7.5 is maintained. For agricultural purposes, application of iron chelates to soils being buffered by carbonates causes fast removal of the iron ions from the chelating agent, thus rendering the iron ion prone to precipitation in the form of sparingly soluble ferric hydroxide (Chen and Barak, Iron nutrition of plants in calcareous soils, 1982, Advances in Agronomy, 15 35: 217-240). The commercial phenolic chelating agents EDDHA (ethylene diamine di- o- hydroxy phenylacetic acid) and EDDHMA (ethylene diamine di o- hydroxy phenyl methyl acetic acid) effectively bind ferric ions up to pH values well above those occurring in soils and thus favoring the use of said phenolic chelating agents in agriculture in the most demanding conditions occurring in 20 soils. However, the phenolic chelates suffer from two main shortcomings: (a) their high prices and (b) handling difficulty associated with the need to spend time and effort on solubilizing dry commercial preparation in the fertilizing tank. 1 WO 99/08982 PCT/US98/16994 To deliver liquid iron chelate to the consumer would be beneficial due to the fact that modem fertilizing schemes tend to prefer using ready made soluble mixes of liquid fertilizers to dispersion of granular forms of fertilizers in the fields or orchards. A product overcoming the shortcomings indicated above to an 5 appreciable extent, would constitute an improvement in the delivery and consumption of iron chelates. However, saving the cost of drying in the manufacturing process requires that the extent that the remaining water, by raising the cost of transportation, should not compromise the above saving. Consequently, the solution should be as concentrated as possible in order to 10 become more cost efficient. Summary of the Invention The present invention provides a means for the production of high concentrations of soluble chelated iron capable of being easily distributed to plants. By one of its aspects a product made according to the invention is an 15 aqueous solution characterized in having a high pH value, containing solubilized iron ions chelated by at least one ligand comprising a plurality of hydroxyl groups, in such a manner that pouring said solution into water delivers into the water the chelated iron without the need for any effort other than the pouring action itself, said water being characterized in that its pH value may be between 3 to 12, such 20 that the new mixture formed with said water is stable over periods extending above at least two days. According to another aspect of the invention, there is provided a method for processing iron chelated with phenolic, ethylene diamine based ligands such 2 WO 99/08982 PCT/US98/16994 that an aqueous solution is obtained comprising adding a ligand having a plurality of hydroxyl groups, in high pH environment, said solution characterized in providing a source of chelated iron stable over a wide range of pH values. Description of the Invention 5 Sequestrene T M , which is a ferric ion chelate with EDDHA by Ciba-Geigy, containing 6% chelated iron, was mainly used to demonstrate the method according to the invention. Example 1. Ten grams of SequestreneTM were mixed with 300 ml of tap water. The slurry was stirred thoroughly and after 30 minutes all the solubles 10 were dissolved. Example 2. Ten grams of SequestreneTM were mixed with 70 ml water in a beaker. After stirring the slurry, a clear solution formed with some undissolved granules left on the bottom of the beaker. In a separate beaker, 8 grams of tartaric acid and 18 grams of KOH were mixed with 50 ml water. The mixture, having a 15 high pH value, was stirred until settling and clearing. After cooling down the clear solution, it was poured with stirring into the beaker containing the SequestreneTM. Immediately a dark clear solution formed, with all granules dissolved except for slight light-brown residue remaining on a Whatman no. 1 filter paper after filtering. 20 Example 3. Eight grams of tartaric acid (food grade) and 18 grams of KOH were slowly dissolved in 50 ml water and the high pH mixture formed was stirred until completely clear and left to cool. Then 10 grams of SequestreneTM were introduced into the solution, stirring thoroughly until the mixture became 3 WO 99/08982 PCT/US98/16994 clear. Only a minor light-brown residue remained on a Whatman no. 1 filter paper after filtering. Example 4. Eight grams of KOH were slowly dissolved in 50 ml water in a beaker. The solution cleared and was left to cool down. Ten grams of 5 SequestreneTM were consequently introduced into the beaker and mixed thoroughly with the clear solution. The high pH solution became turbid with a light-brown slurry forming, which turned into a thick brown residue, indicating disruption of the chelate. The supernatant above the residue was very dark indicating the existence of chelated iron there. 10 Example 5. Eight grams of tartaric acid (food grade) and 18 grams of KOH were slowly dissolved in 25 ml water and the high pH mixture formed was stirred until completely clear, then allowed to cool down. Consequently, 10 grams of SequestreneTM were introduced into the solution, stirring throughly until the mixture became clear. In this case the dissolving action required a considerably 15 longer time than in Example 3, without some of the chelate being dissolved. However, no light-brown slurry was formed as in Example 4, indicating no disruption of the chelate. Example 6. Eight grams of KOH and 10 grams of mannitol were slowly dissolved in 50 ml water in a beaker. The high pH solution cleared and was left 20 to cool down. Ten grams of SequestreneTM were introduced into the solution and stirred thoroughly. A clear dark solution formed with only a slight light-brown residue left on the Whatman no. 1 filter paper after filtering. 4 WO 99/08982 PCT/US98/16994 Example 7. To 500 ml solution of 0.5 Molar EDDHMA were added 75 grams of tartaric acid (food grade). While mixing, 130 grams KOH were added, forming a clear solution. After cooling, 0.5 Moles of FeCl3.6H20 were added while stirring, forming a dark slurry. Upon further addition of 80 grams KOH a 5 quick solubilization response was induced, producing a dark high pH solution, with no apparent disruption of the chelate. Further addition of 300 ml water kept the solution stable without the formation of residue. 5
Claims (10)
- aims 1. An aqueous solution characterized in having a high pH value, containing solubilized iron ions chelated by at least one ligand having a plurality of hydroxyl groups, in such a manner that pouring said solution into water delivers into the water the chelated iron without the need for any effort other than the pouring action itself, said water being characterized in that its pH value may be between about 3 to 12.5, such that the new mixture formed with said water is stable over periods extending above at least two days.
- 2. A solution as in claim 1 having a pH value exceeding 12.
- 3. A solution as in claim 1 containing EDDHA.
- 4. A solution as in claim 1 containing EDDHMA.
- 5. A solution as in claim 1 containing polyhydroxy acid.
- 6. A solution as in claim 1 containing polyhydroxy alcohol.
- 7. A solution as in claim 1 containing at least a half percent in weight of iron, in chelated form.
- 8. A method for processing iron chelated with phenolic, ethylene diamine based ligands such that an aqueous solution is obtained comprising adding a ligand having a plurality of hydroxy groups, in a high pH environment, said solution characterized in providing a source of chelated iron stable over a large range of pH values.
- 9. A method as in claim 8 used for supplying stably chelated iron to aqueous environments having pH values ranging between 3 to 9.
- 10. A method as in claim 8 used for supplying stably chelated iron to aqueous environments having pH values ranging between about 5 to 12.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IL121560 | 1997-08-17 | ||
IL12156097A IL121560A0 (en) | 1997-08-17 | 1997-08-17 | Compositions comprising iron chelates and their production |
PCT/US1998/016994 WO1999008982A1 (en) | 1997-08-17 | 1998-08-17 | Compositions comprising iron chelates |
Publications (1)
Publication Number | Publication Date |
---|---|
AU8909598A true AU8909598A (en) | 1999-03-08 |
Family
ID=11070512
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU89095/98A Abandoned AU8909598A (en) | 1997-08-17 | 1998-08-17 | Compositions comprising iron chelates |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1025063A4 (en) |
AU (1) | AU8909598A (en) |
BR (1) | BR9811206A (en) |
IL (1) | IL121560A0 (en) |
WO (1) | WO1999008982A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1667946A1 (en) * | 2003-09-12 | 2006-06-14 | Norman Klaunzer | Fe(iii)-complexes for use as micronutrients for fertilizers |
GB2411896A (en) * | 2004-03-11 | 2005-09-14 | Yoram Tsivion | Plant feed solutions comprising nutritive metals |
CN115124097B (en) * | 2022-07-08 | 2024-05-03 | 陕西新泓水艺环境科技有限公司 | Balanced water inlet control method, device, water inlet device, system and medium |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2936316A (en) * | 1955-02-25 | 1960-05-10 | Chicopee Mfg Corp | Chelated metal compounds |
US2943100A (en) * | 1956-01-23 | 1960-06-28 | Pfanstiehl Lab Inc | Chelation composition and method of making the same |
US3706545A (en) * | 1970-08-27 | 1972-12-19 | Itt | Foliar sprays |
US3958972A (en) * | 1974-07-05 | 1976-05-25 | Monsanto Company | Chelates of 1,2-diaminocyclohexane tetrakis (methylene phosphonic acid) useful for supplying nutrient metals to plants growing in calcareous soil |
US4265653A (en) * | 1979-07-05 | 1981-05-05 | Pfizer Inc. | Manganese micronutrient solutions |
EP0187423A3 (en) * | 1985-01-09 | 1987-08-26 | Belgium Marketing Services N.V. | Dry leaf-fertilizing components |
GB8807197D0 (en) * | 1988-03-25 | 1988-04-27 | Phosyn Group Ltd | Iron chelate composition |
IL95241A (en) * | 1990-07-31 | 1991-06-30 | Yoram Zivion | Fertilizer compositions for administering ionic metal microelements to plant roots |
IL108028A (en) * | 1993-12-15 | 1998-03-10 | Kidron Agrochem Ltd | Plant nutrient metal- bearing compositions |
GB9414968D0 (en) * | 1994-07-26 | 1994-09-14 | Lambson Ltd | Fertiliser composition |
-
1997
- 1997-08-17 IL IL12156097A patent/IL121560A0/en unknown
-
1998
- 1998-08-17 EP EP98940932A patent/EP1025063A4/en not_active Withdrawn
- 1998-08-17 BR BR9811206-6A patent/BR9811206A/en not_active Application Discontinuation
- 1998-08-17 WO PCT/US1998/016994 patent/WO1999008982A1/en not_active Application Discontinuation
- 1998-08-17 AU AU89095/98A patent/AU8909598A/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
WO1999008982A1 (en) | 1999-02-25 |
EP1025063A1 (en) | 2000-08-09 |
BR9811206A (en) | 2002-09-24 |
EP1025063A4 (en) | 2001-05-16 |
IL121560A0 (en) | 1998-02-08 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US7160349B2 (en) | Formulation of phosphorus fertilizer for plants | |
KR20010035064A (en) | Organic nutritional agent for plants and the preparation method thereof | |
JP2001504430A (en) | Fertilizer composition containing chelated metal ions | |
CN104671921A (en) | Preparation method of polyelement composite chelated iron fertilizer | |
US5354350A (en) | Citrate soluble slow release iron humate | |
KR100346927B1 (en) | Method for synthesizing liquid fertilizer using starfish | |
US20030101785A1 (en) | Micronutrient compositions including aminophosphonic acid and chelated metal ions | |
AU8909598A (en) | Compositions comprising iron chelates | |
CN105948900A (en) | Liquid soil conditioner for regulating and improving physical and chemical properties of saline-alkali soil | |
EP1444175B1 (en) | Aqueous iron chelate composition | |
CN105016920A (en) | Fully water-soluble fertilizer nutrient retarder and preparation method therefor | |
Brown | Agricultural use of synthetic metal chelates | |
MXPA00001627A (en) | Compositions comprising iron chelates | |
RU2003135745A (en) | LIQUID COMPLEX FERTILIZER AND METHOD FOR ITS PRODUCTION | |
EP2004574B1 (en) | Soluble and solubilizing, free-flowing, solid fertilizer compositions, and the preparation thereof | |
JPH10309403A (en) | Powder-state flocculant composition and flocculating treatment method | |
KR0154320B1 (en) | A fertilizing method for organic matter | |
JPH06144975A (en) | Production of liquid fertilizer | |
Hoeffner et al. | Influence of coal humic acid on the growth of Chlorella vulgaris algae | |
EP3218328A1 (en) | Multi - ligand preparations containing one or more metal species | |
JP2006069866A (en) | Animal and plant growth promoting agent | |
Burt | Fertigation chemicals | |
Shannon | ALTERNATIVE P-FERTILISERS FOR NORTHLAND SOILS | |
MXPA99000048A (en) | A method for preparing a liquid fertilizer substance | |
TH36313A (en) | Organic fertilizer |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
MK1 | Application lapsed section 142(2)(a) - no request for examination in relevant period |