METHYLARSONIC ACID

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Names

[ CAS No. ]:
124-58-3

[ Name ]:
METHYLARSONIC ACID

[Synonym ]:
Methyl-arsonsaeure
EINECS 204-705-6
DSMA (JMAF)
Methylarsenic acid
Monomethylarsonate
Monomethylarsinic acid
MAA
Arsonomethan
Methyl arsonic acid
Methylarsinic acid
Methylarsonate
Methylarsonic acid
Arsonic acid,methyl
METHANEARSONIC ACID

Chemical & Physical Properties

[ Boiling Point ]:
393.3ºC at 760mmHg

[ Melting Point ]:
161ºC

[ Molecular Formula ]:
CH5AsO3

[ Molecular Weight ]:
139.97000

[ Flash Point ]:
205.8ºC

[ Exact Mass ]:
139.94500

[ PSA ]:
57.53000

MSDS

Toxicological Information

CHEMICAL IDENTIFICATION

RTECS NUMBER :
PA1575000
CHEMICAL NAME :
Methanearsonic acid
CAS REGISTRY NUMBER :
124-58-3
BEILSTEIN REFERENCE NO. :
1739373
LAST UPDATED :
199710
DATA ITEMS CITED :
28
MOLECULAR FORMULA :
C-H5-As-O3
MOLECULAR WEIGHT :
139.98
WISWESSER LINE NOTATION :
Q-AS-QO&1

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
961 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
1800 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Subcutaneous
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
794 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value

MUTATION DATA

TYPE OF TEST :
Cytogenetic analysis
TEST SYSTEM :
Human Fibroblast
DOSE/DURATION :
1400 umol/L
REFERENCE :
MUREAV Mutation Research. (Elsevier Science Pub. B.V., POB 211, 1000 AE Amsterdam, Netherlands) V.1- 1964- Volume(issue)/page/year: 357,123,1996 *** U.S. STANDARDS AND REGULATIONS *** MSHA STANDARD-air:TWA 0.5 mg(As)/m3 DTLVS* The Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) booklet issues by American Conference of Governmental Industrial Hygienists (ACGIH), Cincinnati, OH, 1996 Volume(issue)/page/year: 3,16,1971 OSHA PEL (Gen Indu):8H TWA 0.5 mg(As)/m3 CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 29,1910.1000,1994 OSHA PEL (Construc):8H TWA 0.5 mg(As)/m3 CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 29,1926.55,1994 OSHA PEL (Shipyard):8H TWA 0.5 mg(As)/m3 CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 29,1915.1000,1993 OSHA PEL (Fed Cont):8H TWA 0.5 mg(As)/m3 CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 41,50-204.50,1994 *** OCCUPATIONAL EXPOSURE LIMITS *** OEL-ARAB Republic of Egypt:TWA 0.2 mg(As)/m3 JAN 1993 OEL-AUSTRALIA:TWA 0.05 mg(As)/m3;Carcinogen JAN 1993 OEL-BELGIUM:TWA 0.2 mg(As)/m3 JAN 1993 OEL-DENMARK:TWA 0.05 mg(As)/m3 JAN 1993 OEL-FINLAND;Carcinogen JAN 1993 OEL-FRANCE:TWA 0.2 mg(As)/m3 JAN 1993 OEL-HUNGARY:STEL 0.5 mg(As)/m3;Carcinogen JAN 1993 OEL-INDIA:TWA 0.2 mg(As)/m3 JAN 1993 OEL-THE PHILIPPINES:TWA 0.5 mg(As)/m3 JAN 1993 OEL-POLAND:TWA 0.3 mg(As)/m3 JAN 1993 OEL-SWEDEN:TWA 0.03 mg(As)/m3;Carcinogen JAN 1993 OEL-SWITZERLAND:TWA 0.1 mg(As)/m3;Carcinogen JAN 1993 OEL-THAILAND:TWA 0.5 mg(As)/m3 JAN 1993 OEL-TURKEY:TWA 0.5 mg(As)/m3 JAN 1993 OEL-UNITED KINGDOM:TWA 0.2 mg(As)/m3 JAN 1993 OEL IN BULGARIA, COLOMBIA, JORDAN, KOREA check ACGIH TLV OEL IN NEW ZEALAND, SINGAPORE, VIETNAM check ACGIH TLV

Safety Information

[ RIDADR ]:
UN 2759

[ Packaging Group ]:
III

[ Hazard Class ]:
6.1(b)

[ HS Code ]:
2931900036

Synthetic Route

Precursor & DownStream

Precursor

  • methyl iodide
  • Chloromethane
  • Cacodylic acid
  • Sodium methyl sulfate
  • Methyl p-toluenesulfonate
  • methyloxoarsine
  • methylarsine
  • Methyldichloroarsine.

DownStream

  • 6-Methylhept-5-en-2-one
  • (E)-oct-4-en-3-one
  • Methylarsonous diiodide
  • Cacodylic acid
  • Carbon dioxide
  • arsenic acid
  • dibromo(methyl)arsane
  • Methyldichloroarsine.
  • diiodo-methyl-amine

Customs

[ HS Code ]: 2931900036

[ Summary ]:
2931900036 chlorodiphenylarsine。supervision conditions:x(environment control release notice for poisonous chemicals)。VAT:17.0%。tax rebate rate:0.0%。MFN tarrif:6.5%。general tariff:30.0%


Related Compounds

  • methylarsonic acid
  • sodium methylarsonic acid
  • sodium methylarsonic acid
  • Methylarsonic acid ammonium salt
  • Methylarsonic acid dimethyl ester
  • (4-nitrophenyl)methylarsonic acid