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7774-41-6

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Basic Information
CAS No.: 7774-41-6
Name: ARSENIC ACID,HEMIHYDRATE
Article Data: 2
Molecular Structure:
Molecular Structure of 7774-41-6 (ARSENIC ACID,HEMIHYDRATE)
Formula: AsH3O4•1/2 H2O
Molecular Weight: 150.951
Synonyms: UNII-7U320R238A;ARSENIC ACID,HEMIHYDRATE;arsoric acid hydrate;Orthoarsenic acid hemihydrate;
Density: 2.250
Melting Point: 35.5°C
Boiling Point: -H2Oat 160°C
Safety: Confirmed human carcinogen. Poison by intravenous route. When heated to decomposition it emits toxic fumes of arsenic. See also ARSENIC COMPOUNDS.
PSA: 164.75000
LogP: -4.40550
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Chemistry

IUPAC name: Arsoric acid hydrate 
Molecular Formula: As2H8O9
Molecular Weight: 150.95 g/mol
Following is the structure of Arsenic acid, hemihydrate (CAS NO.7774-41-6):
     

Toxicity Data With Reference

1.    

ivn-rbt LD50:6 mg/kg

     MEIEDD    Merck Index. 11 (1989),126.

Consensus Reports

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

Safety Profile

Confirmed human carcinogen. Poison by intravenous route. When heated to decomposition it emits toxic fumes of arsenic. See also ARSENIC COMPOUNDS.

Standards and Recommendations

OSHA PEL: TWA 0.01 mg(As); Cancer Hazard
ACGIH TLV: TWA 0.01 mg/m3; Confirmed Human Carcinogen; BEI: 35 μ (As)/L inorganic arsenic and methylated metabolites in urine
NIOSH REL: (Arsenic, Inorganic) CL 2 µg(As)/m3/15 M
DFG MAK: Human Carcinogen

Specification

 Arsenic acid, hemihydrate , its cas register number is 7774-41-6. It also can be called Orthoarsenic acid hemihydrate . It should be stored in low-temperature and drying place, and also should be kept away from food.