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| Names | |
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| IUPAC name
Disodium methyl-dioxido-oxoarsorane
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| Other names
Disodium methanearsonate; disodium methylarsonate
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| Identifiers | |
3D model (JSmol)
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| Abbreviations | DSMA |
| ChemSpider | |
| ECHA InfoCard | 100.005.110 
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PubChem CID
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| UNII | |
CompTox Dashboard (EPA)
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| Properties | |
| CH3AsNa2O3 | |
| Molar mass | 183.93 g/mol |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C ※, 100 kPa).
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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. 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. Arsenic is classified as a Group-A carcinogen. The EPA states 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.
See also※
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.
- ^ 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.