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Basic Information
CAS No.: 3687-31-8
Name: LEAD(II) ARSENATE
Molecular Structure:
Molecular Structure of 3687-31-8 (LEAD(II) ARSENATE)
Formula: AsH3 O4 . 3/2 Pb
Molecular Weight: 899.41
Synonyms: Leadarsenate; Lead arsenate (Pb3(AsO4)2); Lead(2+) orthoarsenate (Pb3(AsO4)2); NuRexform
Density: g/cm3
Melting Point: 382
Boiling Point: °Cat760mmHg
Flash Point: °C
Solubility: insoluble
Hazard Symbols: Xi
Risk Codes: 23/25-50/53
Safety: Confirmed carcinogen. A poison by ingestion. When heated to decomposition it emits toxic vapors of lead and arsenic.
PSA: 172.50000
LogP: -2.85440
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Chemistry

IUPAC Name: Lead(2+) diarsorate
Synonyms: Nu Rexform ; Trilead diarsenate
CAS NO: 3687-31-8
Molecular Formula of Lead arsenate (CAS NO.3687-31-8) : As2O8Pb3
Molecular Weight of Lead arsenate (CAS NO.3687-31-8) : 899.44
Molecular Structure of Lead arsenate (CAS NO.3687-31-8) :
EINECS: 222-979-5
Mol File: 3687-31-8.mol
Density 5,8 g/cm3
Appearance: white solid. Impure industrial products was pink.
Solubility: slightly soluble in water. Dissolved in nitric acid.

Uses

 Lead arsenate (CAS NO.3687-31-8) is toxic! and is used for stomach poison insecticide, mainly used for fruit insect pest control ( not used now ), a large number can used for manufacture of arsenic compounds .

Safety Profile

Confirmed carcinogen. A poison by ingestion. When heated to decomposition it emits toxic vapors of lead and arsenic.
Risk Statements 23/25-50/53
R23/25:Toxic by inhalation and if swallowed. 
R50/53:Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment.
Safety Statements 20-21-28-45 
S20:When using, do not eat or drink. 
S21:When using do not smoke. 
S28:After contact with skin, wash immediately with plenty of soap-suds. 
S45:In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.)
RIDADR 1617
HazardClass 6.1
PackingGroup II

Standards and Recommendations

OSHA PEL: OSHA: Cancer Hazard
DOT Classification:  6.1; Label: Poison