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Substance Name: Disodium methanearsonate
RN: 144-21-8
UNII: 7NK4BV40VN
InChIKey: SDIXRDNYIMOKSG-UHFFFAOYSA-L

Classification Codes

  • Agricultural Chemical
  • Herbicide
  • Mutation Data
  • Reproductive Effect

Molecular Formula

  • C-H5-As-O3.2Na

Molecular Weight

  • 183.934
 
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Names and Synonyms

Name of Substance

  • Disodium methanearsonate

Synonyms

  • Ansar 184
  • Ansar 8100
  • Ansar DSMA Liquid
  • Arrhenal
  • Arsinyl
  • Arsonic acid, methyl-, disodium salt
  • Arsynal
  • Cacodyl New
  • Caswell No. 405
  • Chipco Crab Kleen
  • Crab-3-rad 100
  • Cralo-E-rad
  • Dal-E-Rad 100
  • Di-tac
  • Diarsen
  • Dimet
  • Dinate
  • Disodium methanarsonate
  • Disodium methanearsenate
  • Disodium methanearsonate
  • Disodium methyl arsenate
  • Disodium methyl arsonate
  • Disodium methylarsenate
  • Disodium methylarsonate
  • Disodium monomethylarsonate
  • Disomear
  • DMA
  • DMA (VAN)
  • DMA 100
  • Drexel DSMA liquid
  • DSMA
  • DSMA liquid
  • EINECS 205-620-7
  • EPA Pesticide Chemical Code 013802
  • HSDB 1701
  • Jon-trol
  • Maa sodium salt
  • Methanearsonic acid, disodium salt
  • Methar
  • Methar 30
  • Metharsan
  • Metharsinat
  • Methylarsonat disodny
  • Methylarsonat disodny [Czech]
  • Methylarsonic acid, disodium salt
  • Namate
  • Neo-Asycodile
  • NSC 5270
  • Sodar
  • Sodium methanearsonate
  • Sodium metharsonate
  • Sodium methylarsonate
  • Somar
  • Stenosine
  • Tonarsan
  • Tonarsin
  • UNII-7NK4BV40VN
  • Versar DSMA LQ
  • Weed broom
  • Weed-E-Rad
  • Weed-E-rad 360
  • Weed-E-Rad DMA Powder
  • Weed-hoe

Systematic Names

  • Arsonic acid, methyl-, disodium salt
  • Arsonic acid, methyl-, disodium salt (9CI)
  • Disodium methylarsonate
  • Methanearsonic acid, disodium salt

Superlist Names

  • Disodium methanearsonate
  • Methanearsonic acid, disodium salt

Registry Numbers

CAS Registry Number

  • 144-21-8

FDA UNII

  • 7NK4BV40VN

Other Registry Number

  • 19444-53-2

Related Registry Number

  • 124-58-3 (Parent)

System Generated Number

  • 0000144218

Molecular Formulas

Molecular Formula

  • C-H5-As-O3.2Na

Molecular Formula Fragments

  • C-H5-As-O3
  • COMPONENT
  • Na

Structure Descriptors

InChI

1S/CH5AsO3.2Na/c1-2(3,4)5;;/h1H3,(H2,3,4,5);;/q;2*+1/p-2

InChIKey

SDIXRDNYIMOKSG-UHFFFAOYSA-L

Smiles

[As](C)(=O)([O-])[O-].[Na+].[Na+]

Toxicity

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
mouse LD50 intraperitoneal > 1gm/kg (1000mg/kg)   National Technical Information Service. Vol. AD691-490,
mouse LD50 oral 1150mg/kg (1150mg/kg)   Japan Pesticide Information. Vol. (3), Pg. 5, 1970.
rabbit LD50 skin 10gm/kg (10000mg/kg)   Farm Chemicals Handbook. Vol. -, Pg. C119, 1991.
rat LC50 inhalation > 22100mg/m3/4 (22100mg/m3)   Farm Chemicals Handbook. Vol. -, Pg. C119, 1991.
rat LD50 oral 821mg/kg (821mg/kg)   Fundamental and Applied Toxicology. Vol. 7, Pg. 299, 1986.

Physical Properties

Physical Property Value Units Temp (deg C) Source
Melting Point 132-139 deg C   EXP
pKa Dissociation Constant 4.1 (none)   EXP
log P (octanol-water) -5.340 (none)   EST
Water Solubility 4.32E+05 mg/L 25 EXP
Vapor Pressure 1.00E-07 mm Hg 25 EXP
Henry's Law Constant 5.60E-14 atm-m3/mole 25 EST
Atmospheric OH Rate Constant 1.90E-13 cm3/molecule-sec 25 EST

Physical property data is provided to ChemIDplus by SRC, Inc.