Disodium methyl arsonate
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IUPAC name Disodium methyl-dioxido-oxoarsorane | |
Other names Disodium methanearsonate; disodium methylarsonate | |
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3D model (JSmol) |
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Abbreviations | DSMA |
ChemSpider |
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ECHA InfoCard | 100.005.110 |
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CompTox Dashboard (EPA) |
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InChI
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Properties | |
Chemical formula | CH3AsNa2O3 |
Molar mass | 183.93 g/mol |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). N verify (what is YN ?) Infobox references |
Disodium methyl arsenate (DSMA) is the organoarsenic compound with the formula CH3AsO3Na2. It is a colorless, water-soluble solid derived from methanearsonic acid. It is used as a herbicide.[1] Tradenames include Metharsinat, Arrhenal, Disomear, Metharsan, Stenosine, Tonarsan, Tonarsin, Arsinyl, Arsynal, and Diarsen.
The EPA states that all forms of arsenic are a serious risk to human health and the United States' Agency for Toxic Substances and Disease Registry ranked arsenic as number 1 in its 2001 Priority List of Hazardous Substances at Superfund sites.[2] Arsenic is classified as a Group-A carcinogen.[2] The EPA states[3] that:
Arsenate (AsV) is the oxidized form and occurs in well-aerated soils, whereas in chemically-reduced soil environments, arsenite (AsIII) is the prevalent As form. Although arsenite is more toxic than arsenate, arsenate can also have deleterious effects on humans, plants, and microorganisms. Arsenic-contaminated soils pose serious risk to human health.
The EPA also states that, while contaminated soil poses a serious risk to health, arsenic frequently mobilizes from soils and other sources, ending up in water where it is even more of a toxicity issue.[2]
See also
- Cacodylic acid
- Monosodium methyl arsenate
References
- ^ Grund, S. C.; Hanusch, K.; Wolf, H. U. "Arsenic and Arsenic Compounds". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a03_113.pub2. ISBN 978-3527306732.
- ^ a b c Dibyendu, Sarkar; Datta, Rupali (2007). "Biogeochemistry of Arsenic in Contaminated Soils of Superfund Sites". EPA. United States Environmental Protection Agency. Retrieved 25 February 2018.
- ^ Carelton, James (2007). "Final Report: Biogeochemistry of Arsenic in Contaminated Soils of Superfund Sites". EPA. United States Environmental Protection Agency. Retrieved 25 February 2018.
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- acetochlor
- alachlor
- asulam
- benfluralin
- butachlor
- diethatyl
- diflufenican
- dimethenamid
- flamprop
- metazachlor
- metolachlor
- oryzalin
- pendimethalin
- pretilachlor
- propachlor
- propanil
- trifluralin
- aminopyralid
- chloramben
- clopyralid
- dicamba
- picloram
- pyrithiobac
- quinclorac
- quinmerac
- cacodylic acid
- copper arsenate
- DSMA
- MSMA
- flurochloridone
- isoxaflutole
- leptospermone
- mesotrione
- nitisinone
- sethoxydim
- sulcotrione
- bensulide
- bialaphos
- ethephon
- fosamine
- glufosinate
- glyphosate
- piperophos
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