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2163-80-6

2163-80-6 structure
2163-80-6 structure
  • Name: Sodium methanearsonate
  • Chemical Name: msma
  • CAS Number: 2163-80-6
  • Molecular Formula: CH4AsNaO3
  • Molecular Weight: 161.95200
  • Catalog: Chemical pesticide herbicide Other herbicides
  • Create Date: 2018-05-13 08:00:00
  • Modify Date: 2024-01-04 10:37:35
  • Sodium methanearsonate is also known as Monosodium Acid Methane Arsonate Sesquihydrate. It is an environmental toxic compound. It also functions as a commonly used herbicide for weed control in grass.

Name msma
Synonyms asazol
Sodium methylarsonate
herbanm
drexar
sodium hydrogen As-methylarsonate
bueno
monate
monex
gepiron
merge
bueno6
sodium hydrogen methylarsonate
EINECS 218-495-9
phyban
Density 1.5
Boiling Point 393.3ºC at 760 mmHg
Melting Point 113-116ºC
Molecular Formula CH4AsNaO3
Molecular Weight 161.95200
Flash Point 205.8ºC
Exact Mass 161.92700
PSA 60.36000
Water Solubility >=10 g/100 mL at 22 ºC

CHEMICAL IDENTIFICATION

RTECS NUMBER :
PA2625000
CHEMICAL NAME :
Methanearsonic acid, monosodium salt
CAS REGISTRY NUMBER :
2163-80-6
LAST UPDATED :
199712
DATA ITEMS CITED :
46
MOLECULAR FORMULA :
C-H4-As-O3.Na
MOLECULAR WEIGHT :
161.96
WISWESSER LINE NOTATION :
Q-AS-QO&1 &-NA-

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :
Open irritation test
ROUTE OF EXPOSURE :
Administration onto the skin
SPECIES OBSERVED :
Rodent - rabbit
TYPE OF TEST :
Standard Draize test
ROUTE OF EXPOSURE :
Administration into the eye
SPECIES OBSERVED :
Rodent - rabbit
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
700 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
TYPE OF TEST :
LC50 - Lethal concentration, 50 percent kill
ROUTE OF EXPOSURE :
Inhalation
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
>20 gm/m3
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 :
300 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 - rabbit
DOSE/DURATION :
102 mg/kg
TOXIC EFFECTS :
Behavioral - muscle weakness Gastrointestinal - hypermotility, diarrhea Kidney, Ureter, Bladder - urine volume decreased
TYPE OF TEST :
LC50 - Lethal concentration, 50 percent kill
ROUTE OF EXPOSURE :
Inhalation
SPECIES OBSERVED :
Rodent - rabbit
DOSE/DURATION :
>20 gm/m3/4H
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 :
Administration onto the skin
SPECIES OBSERVED :
Rodent - rabbit
DOSE/DURATION :
2500 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 :
Mammal - cattle
DOSE/DURATION :
230 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 :
Unreported
SPECIES OBSERVED :
Mammal - species unspecified
DOSE/DURATION :
50 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
1986 mg/kg/21D-C
TOXIC EFFECTS :
Related to Chronic Data - death
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
8628 mg/kg/60D-C
TOXIC EFFECTS :
Endocrine - hypoglycemia Blood - pigmented or nucleated red blood cells Blood - changes in other cell count (unspecified)
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Mammal - cattle
DOSE/DURATION :
100 mg/kg/10D-I
TOXIC EFFECTS :
Gastrointestinal - gastritis Kidney, Ureter, Bladder - other changes Related to Chronic Data - death

MUTATION DATA

TYPE OF TEST :
Mutation in mammalian somatic cells
TEST SYSTEM :
Rodent - mouse Lymphocyte
DOSE/DURATION :
4 gm/L
REFERENCE :
MUREAV Mutation Research. (Elsevier Science Pub. B.V., POB 211, 1000 AE Amsterdam, Netherlands) V.1- 1964- Volume(issue)/page/year: 386,279,1997 *** U.S. STANDARDS AND REGULATIONS *** EPA FIFRA 1988 PESTICIDE SUBJECT TO REGISTRATION OR RE-REGISTRATION FEREAC Federal Register. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) V.1- 1936- Volume(issue)/page/year: 54,7740,1989 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 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOHS - National Occupational Hazard Survey (1974) NOHS Hazard Code - A1796 No. of Facilities: 78 (estimated) No. of Industries: 1 No. of Occupations: 1 No. of Employees: 235 (estimated) NOHS - National Occupational Hazard Survey (1974) NOHS Hazard Code - T0703 No. of Facilities: 34 (estimated) No. of Industries: 1 No. of Occupations: 1 No. of Employees: 136 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - T0703 No. of Facilities: 139 (estimated) No. of Industries: 1 No. of Occupations: 3 No. of Employees: 3472 (estimated)
Symbol GHS06 GHS09
GHS06, GHS09
Signal Word Danger
Hazard Statements H301 + H331-H410
Precautionary Statements Missing Phrase - N15.00950417-P261-P304 + P340 + P312-P403 + P233
Hazard Codes Xn: Harmful;
Risk Phrases R22
Safety Phrases 20/21-28-45-60-61
RIDADR UN 1557
RTECS PA2625000
Packaging Group III
Hazard Class 6.1(b)