Monosodium methyl arsonate explained

Monosodium methyl arsenate (MSMA) is an arsenic-based herbicide. It is an organo-arsenate; less toxic than the inorganic form of arsenates. However, 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.^[1]

Arsenic is classified as a Group-A carcinogen.^[1] The EPA states that:^[2]

Trade names include:

• Target 6 Plus
• Target 6.6
• MSMA 6 Plus
• MSMA 6.6

References

• Web site: Agency for Toxic Substances & Disease Registry . Arsenic Toxicity Case Study . Environmental Health and Medicine Education . 25 December 2013 .
• Web site: MAA Research Task Force . Organic Arsenical Products Task Force .
• Web site: National Library of Medicine . Sodium Methanearsonate . HSDB Database .

Specific

1. Web site: Biogeochemistry of Arsenic in Contaminated Soils of Superfund Sites . Dibyendu . Sarkar . Datta . Rupali . 2007 . EPA . United States Environmental Protection Agency . 25 February 2018 .
2. Web site: Final Report: Biogeochemistry of Arsenic in Contaminated Soils of Superfund Sites . Carelton . James . 2007 . EPA . United States Environmental Protection Agency . 25 February 2018 .