Chemistry:Aminomethylphosphonic acid
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| Names | |
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| Preferred IUPAC name
(Aminomethyl)phosphonic acid | |
| Other names
Aminomethanephosphonic acid
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| Identifiers | |
3D model (JSmol)
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| Abbreviations | AMPA; AMeP |
| ChEBI | |
| ChemSpider | |
PubChem CID
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| UNII | |
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| Properties | |
| CH6NO3P | |
| Molar mass | 111.037 g·mol−1 |
| Appearance | Solid |
| Melting point | 338 to 344 °C (640 to 651 °F; 611 to 617 K) |
| Acidity (pKa) | 0.4 |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
| Infobox references | |
Aminomethylphosphonic acid (AMPA) is a weak organic acid with a phosphonic acid group.
Application
AMPA apparently can be used as biocide and pesticide.[1] AMPA is also used in research to assess the exposure of glyphosate.[2]
Environmental fate
AMPA is one of the primary degradation products of the herbicide glyphosate[4] and the related chemical glyphosat-trimesium.[1]
AMPA has the potential to be broken down further by manganese oxide in laboratory conditions, however in soil manganese oxide is usually only present in trace amounts.[5] Microbial degradation of AMPA is the more likely degradation pathway, where it degrades into phosphoric acid[6][7] and ultimately to carbon dioxide and inorganic phosphate.[8]
Toxicity
AMPA has toxicity which is comparable to that of glyphosate and it is therefore considered to be of similar toxicological concern (harmful in greater than 0.5 parts per million) as glyphosate itself.[9]
References
- ↑ 1.0 1.1 "(Aminomethyl)phosphonic acid". NLM. https://pubchem.ncbi.nlm.nih.gov/compound/Aminomethyl_phosphonic-acid.
- ↑ Fagan, John; Bohlen, Larry; Patton, Sharyle; Klein, Kendra (October 2020). "Organic diet intervention significantly reduces urinary glyphosate levels in U.S. children and adults". Environmental Research 189: 109898. doi:10.1016/j.envres.2020.109898. PMID 32797996. Bibcode: 2020ER....189j9898F.
- ↑ Zuliang Chen, Wenxiang He, Michael Beer, Mallavarapu Megharaj, Ravendra Naidu (2009-05-15). "Speciation of glyphosate, phosphate and aminomethylphosphonic acid in soil extracts by ion chromatography with inductively coupled plasma mass spectrometry with an octopole reaction system". Talanta 78 (3): 852–856. doi:10.1016/j.talanta.2008.12.052. PMID 19269440.
- ↑ Environmental Fate of Glyphosate , Jeff Schuette, Department of Pesticide Regulation, California
- ↑ K. A. Barrett and M. B. McBride. Oxidative Degradation of Glyphosate and Aminomethylphosphonate by Manganese Oxide. Environ. Sci. Technol., 2005, 39 (23), pp 9223–9228
- ↑ Pipke R, Amrhein N. (1988) Isolation and characterization of a mutant of Arthrobacter sp. strain GLP-1 which utilizes the herbicide glyphosate as its sole source of phosphorus and nitrogen. Applied and Environmental Microbiology 54(11): 2868-2870.
- ↑ Forlani G, Mangiagalli A, Nielsen E, Suardi CM. (1999) Degradation of the phosphonate herbicide glyphosate in soil: Evidence for a possible involvement of unculturable microorganisms. Soil Biology and Biochemistry 31: 991-997
- ↑ Backgrounder: Glyphosate does not degrade to phosphorous acid in the environment. Monsanto. 2005
- ↑ Pesticide Residues in Food - 1997, FAO Panel of Experts on Pesticide Residues in Food and the Environment and the WHO Core Assessment Group
External links
- Concentrations of Glyphosate, Its Degradation Product, Aminomethylphosphonic Acid, and Glufosinate in Ground- and Surface-Water, Rainfall, and Soil Samples Collected in the United States, 2001-06, United States Geological Survey
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