Arsonic acid, methyl-,disodium salt (9CI) cas no:144-21-8

NameArsonic acid, methyl-,disodium salt (9CI)
CAS144-21-8
SynonymsMethanearsonicacid, disodium salt (8CI);Ansar 184;Ansar 8100;Arifen;Arrhenal;Arsenil;Arsinyl;Arsynal;Cacodyl New;Cralo-E-rad;DMA;DMA 100;DSMA;Diarsen;Disodium methanearsonate;Disodium methylarsenate(2-);Disodium methylarsonate;Disomear;Methar;Metharsan;Metharsinat;Neo-Asycodile;Sodar;Somar;Stenosine;Tonarsan;Tonarsin;
EINECS(EC#)205-620-7
Molecular FormulaCH₃AsNa₂O₃
Molecular Weight183.94

Hazardclass6.1(b)

Hazard Xn
Risk R22
Safety

Moderately toxic by ingestion. Experimental teratogen. Dangerous fire hazard by spontaneous chemical reaction. Ignites spontaneously in dry air. Can react vigorously with oxidizing materials, e.g., air, Cl₂. An herbicide. When heated to decomposition it emits toxic fumes of As and Na₂O. See also ARSENIC COMPOUNDS.
Hazard Codes:
Xn: Harmful
Risk Statements about Disodium methanearsenate (144-21-8):
R22 Harmful if swallowed.
Safety Statements about Disodium methanearsenate (144-21-8):
S26 In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.

1.		orl-rat LD50:821 mg/kg		FAATDF    Fundamental and Applied Toxicology. 7 (1986),299.
2.		orl-mus LD50:1150 mg/kg		JPIFAN    Japan Pesticide Information.(3),(1970),5.
3.		skn-rbt LD50:10 g/kg		FMCHA2    Farm Chemicals Handbook .(Meister Publishing,Willoughy, OH.: )1989,C114.