METHYLARSONIC ACID

Modify Date: 2026-08-02 11:40:58

METHYLARSONIC ACID Structure
METHYLARSONIC ACID structure
Common Name METHYLARSONIC ACID
CAS Number 124-58-3 Molecular Weight 139.97000
Density N/A Boiling Point 393.3ºC at 760mmHg
Molecular Formula CH5AsO3 Melting Point 161ºC
MSDS N/A Flash Point 205.8ºC

Summary: Methylarsonic acid, Chinese name: 甲基胂酸, CAS number: 124-58-3, molecular formula: CH5AsO3, molecular weight: 139.97000. For research-use only, not for medical or clinical usage.


 Names

This table lists Chinese names, IUPAC names and various aliases of this chemical substance.

Name methylarsonic acid
Synonym More Synonyms

 Chemical & Physical Properties

This table shows physicochemical parameters including melting point, boiling point, density, solubility and optical rotation. Missing data is marked as N/A.

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
InChIKey QYPPRTNMGCREIM-UHFFFAOYSA-N
SMILES C[As](=O)(O)O

 MSDS

This table provides MSDS information including hazard classification, first‑aid, fire‑fighting, spill handling, operation and storage instructions.

 Toxicological Information

This table summarizes toxicological test data, acute & chronic toxicity and ecological hazard parameters for this chemical.

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

This table covers safety warnings, protective measures, incompatible substances and disposal guidelines for this compound.

RIDADR UN 2759
Packaging Group III
Hazard Class 6.1(b)
HS Code 2931900036

 Synthetic Route

This table presents publicly reported synthetic routes, reaction conditions, reactants and product information of the compound.

 Customs

This table shows customs‑related data including HS‑code, tariff and regulatory conditions for import and export.

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%

 Synonyms

This table collects all English aliases, systematic names and CAS‑related synonyms of the compound.

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

 METHYLARSONIC ACID | FAQ

This section contains frequently‑asked‑questions about this compound, including basic parameters, properties, storage conditions and corresponding answers.

Q: What English synonyms does methylarsonic acid have?
A: English synonyms of methylarsonic acid: 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.
Q: What is the molecular formula of methylarsonic acid?
A: Molecular formula of methylarsonic acid is CH5AsO3.
Q: What is the polar surface area (PSA) of methylarsonic acid?
A: Polar surface area (PSA) of methylarsonic acid is 57.53000.
Q: What is the InChIKey of methylarsonic acid?
A: InChIKey of methylarsonic acid is QYPPRTNMGCREIM-UHFFFAOYSA-N.
Q: What is the SMILES notation of methylarsonic acid?
A: SMILES notation of methylarsonic acid is C[As](=O)(O)O.
Q: What are the downstream products of methylarsonic acid?
A: Related downstream products(CAS) of methylarsonic acid: 110-93-0;69065-31-2;7207-97-8;75-60-5;124-38-9;7778-39-4;676-70-0;593-89-5;38729-07-6.
Q: What is the boiling point of methylarsonic acid?
A: Boiling point of methylarsonic acid is 393.3ºC at 760mmHg.
Q: What is the English name of methylarsonic acid?
A: The English name of methylarsonic acid is methylarsonic acid.
Q: What is the melting point of methylarsonic acid?
A: Melting point of methylarsonic acid is 161ºC.
Q: What are the upstream materials of methylarsonic acid?
A: Related upstream materials(CAS) of methylarsonic acid: 74-88-4;74-87-3;75-60-5;512-42-5;80-48-8;593-58-8;593-52-2;593-89-5.

 METHYLARSONIC ACIDfactory

This table lists manufacturers and suppliers of this compound, including vendor names and product supply reference information.

Shanghai Nianxing Industrial Co., Ltd
Henan Tianfu Chemical Co., Ltd.
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