Methanearsonic acid, monoammonium salt supplier

Name
Caswell No. 580C
EINECS
CAS No. 2321-53-1
Density g/cm³
Solubility
Melting Point 160.5oC
Formula CH5 As O3 . H3 N
Boiling Point 393.3°Cat760mmHg
Molecular Weight 157.02
Flash Point 205.8°C
Transport Information
Appearance
Safety Moderately toxic by ingestion and intraperitoneal routes. Mutation data reported. When heated to decomposition it emits toxic vapors of NH₃ and As.
Risk Codes
Molecular Structure
Hazard Symbols
Synonyms Methanearsonicacid, monoammonium salt (8CI); Ammonium methanearsonate; Ansar 157; MAMA;Monoammonium methanearsonate
PSA 60.77000
LogP -0.70590

Methanearsonic acid, monoammonium salt Chemical Properties

IUPAC name of Methanearsonic acid, monoammonium salt (CAS NO.2321-53-1): Azanium hydroxy(methyl)arsinate
Synonyms: Caswell No. 580C ; Azanium methyl-oxido-arsinic acid ; Monoammoniummethanearsonate ; Ansar-157 ; Methylarsonic acid hydrogen ammonium salt
CAS: 2321-53-1
Molecular Weight: 157.00072 g/mol
Molecular Formula: CH₈AsNO₃
Molecular Structure:

Index of Refraction: 1.554
Density: 1.205 g/cm³
Flash Point: 175.8 °C
Boiling Point: 344.3 °C at 760 mmHg

Methanearsonic acid, monoammonium salt Toxicity Data With Reference

The toxicity of Methanearsonic acid, monoammonium salt (CAS NO.2321-53-1):

Organism	Test Type	Route	Reported Dose (Normalized Dose)	Effect	Source
mouse	LD₅₀	intraperitoneal	> 1gm/kg (1000mg/kg)		National Technical Information Service. Vol. AD691-490,
rat	LD₅₀	oral	750mg/kg (750mg/kg)		"Pesticide Index," Frear, E.H., ed., State College, PA, College Science Pub., 1969Vol. 4, Pg. 266, 1969.

Methanearsonic acid, monoammonium salt Consensus Reports

Arsenic and its compounds are on the Community Right-To-Know List.

Methanearsonic acid, monoammonium salt Safety Profile

The safety information of Methanearsonic acid, monoammonium salt (CAS NO.2321-53-1):
Moderately toxic by ingestion and intraperitoneal routes. Mutation data reported. When heated to decomposition it emits toxic vapors of NH₃ and As.

Methanearsonic acid, monoammonium salt Standards and Recommendations

OSHA PEL: TWA 0.5 mg(As)/m³
ACGIH TLV: BEI: 35 µ (As)/L inorganic arsenic and methylated metabolites in urine

Product Name

Caswell No. 580C

Methanearsonic acid, monoammonium salt Chemical Properties

Methanearsonic acid, monoammonium salt Toxicity Data With Reference

Methanearsonic acid, monoammonium salt Consensus Reports

Methanearsonic acid, monoammonium salt Safety Profile

Methanearsonic acid, monoammonium salt Standards and Recommendations

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