Arsonic acid, methyl-,calcium salt (2:1) (9CI) cas no:5902-95-4

NameArsonic acid, methyl-,calcium salt (2:1) (9CI)
CAS5902-95-4
SynonymsMethanearsonicacid, calcium salt (2:1) (8CI); CMA; Calar; Calcium acid methanearsonate;Calcium hydrogen methanearsonate
EINECS(EC#)227-598-8
Molecular FormulaCH5 As O3 . 1/2 Ca
Molecular Weight318.02

Safety

Moderately toxic by intraperitoneal and possibly other routes. Arsenic compounds are considered to be poisons. An herbicide. When heated to decomposition it emits toxic fumes of As. See also ARSENIC COMPOUNDS and CALCIUM COMPOUNDS.
Hazard Codes: Xi
Risk Statements: 36/37/38 
R36/37/38: Irritating to eyes, respiratory system and skin.
Safety Statements: 26-36 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S36: Wear suitable protective clothing.

1.		ipr-mus LD50:500 mg/kg		NTIS**    National Technical Information Service. (Springfield, VA 22161) (Formerly U.S. Clearinghouse for Scientific and Technical Information) AD414-344 .
2.		unr-mam LD50:4000 mg/kg		FMCHA2    Farm Chemicals Handbook .(Meister Publishing,Willoughy, OH.: )1983,C241.