Methylarsonic acid

Methylarsonic acid
Names
Preferred IUPAC name
Methylarsonic acid[1]
Other names
Methanearsonic acid
Monomethylarsonic acid
Identifiers
3D model (JSmol)
4-04-00-03682
ChemSpider
ECHA InfoCard 100.004.278 Edit this at Wikidata
EC Number
  • 204-705-6
RTECS number
  • PA1575000
UNII
UN number 1557
  • InChI=1S/CH5AsO3/c1-2(3,4)5/h1H3,(H2,3,4,5)
    Key: QYPPRTNMGCREIM-UHFFFAOYSA-N
  • C[As](=O)(O)O
Properties
CH5AsO3
Molar mass 139.970 g·mol−1
Appearance white solid
Melting point 160.5 °C (320.9 °F; 433.6 K)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Methylarsonic acid is an organoarsenic compound with the formula CH3AsO3H2. It is a colorless, water-soluble solid. Salts of this compound, e.g. disodium methyl arsonate, have been widely used in as herbicides and fungicides in growing cotton and rice.[2]

  1. ^ International Union of Pure and Applied Chemistry (2014). Nomenclature of Organic Chemistry: IUPAC Recommendations and Preferred Names 2013. The Royal Society of Chemistry. pp. 916, 918. doi:10.1039/9781849733069. ISBN 978-0-85404-182-4.
  2. ^ 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.