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7784-40-9

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Basic Information
CAS No.: 7784-40-9
Name: LEAD ARSENATE
Molecular Structure:
Molecular Structure of 7784-40-9 (LEAD ARSENATE)
Formula: AsH3 O4 . Pb
Molecular Weight: 347.12
Synonyms: Leadarsenate (PbHAsO4) (6CI,7CI); Acid lead arsenate; Arsenic acid lead salt; Leadacid arsenate; Lead arsenate; Lead hydrogen arsenate (PbHAsO4); Lead(2+)monohydrogen arsenate
EINECS: 232-064-2
Density: 5.79
Melting Point: ca. 280 C (decomposes)
Solubility:

Stability

Toxicology

    Toxic if inhaled, swallowed or absorbed through the skin. Cumulative poison.Reproductive toxin. Carcinogenic. Added to the ECHA Candidate List of Substances of VeryHigh Concern for au
Hazard Symbols: Highly toxic. TLV: 0.15 mg/m3; a carcinogen.
Risk Codes: R45; R61; R23/25; R33; R50/53; R62
Safety: Confirmed human carcinogen. A poison by ingestion. Used as an insecticide and herbicide. When heated to decomposition it emits very toxic fumes of As and Pb. See also ARSENIC COMPOUNDS and LEAD COMPOUNDS.
PSA: 83.42000
LogP: -1.67500
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Chemistry

MF: AsHO4Pb
MW: 347.13
APPEARANCE: ODOURLESS WHITE HEAVY POWDER
Melting point (decomposes): about 280°C
Relative density (water=1): 5.79

Toxicity Data With Reference

1.   

orl-rat LD50:100 mg/kg

   PCOC**    Pesticide Chemicals Official Compendium ,Association of the American Pesticide Control Officials, Inc.(Topeka, KS.: )1966,653.
2.   

orl-mus LD50:1526 mg/kg

   GISAAA    Gigiena i Sanitariya. 51 (1)(1986),74.
3.   

ipr-mus LD50:128 mg/kg

   GISAAA    Gigiena i Sanitariya. 51 (1)(1986),74.
4.   

orl-rbt LD50:100 mg/kg

   JPIFAN    Japan Pesticide Information.(3)(1970),5.
5.   

orl-ckn LD50:450 mg/kg

   PCOC**    Pesticide Chemicals Official Compendium ,Association of the American Pesticide Control Officials, Inc.(Topeka, KS.: )1966,653.

Consensus Reports

IARC Cancer Review: Human Sufficient Evidence IMEMDT    IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 23 , 1980,p. 39.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) ; Animal Inadequate Evidence IMEMDT    IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 1 , 1972,p. 40.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) ; IMEMDT    IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 1 , 1972,p. 40.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) . Arsenic and its compounds, as well as lead and its compounds, are on the Community Right-To-Know List. Reported in EPA TSCA Inventory.

Safety Profile

Hazard Codes: T,N
Risk Statements: 45-61-23/25-33-50/53-62
Safety Statements: 53-45-60-61

Confirmed human carcinogen. A poison by ingestion. Used as an insecticide and herbicide. When heated to decomposition it emits very toxic fumes of As and Pb. See also ARSENIC COMPOUNDS and LEAD COMPOUNDS.

Standards and Recommendations

OSHA PEL: TWA 0.05 mg(Pb)/m3; 0.01 mg(As)/m3; 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: (Inorganic Lead) TWA 0.10 mg(Pb)/m3; (Inorganic Arsenic) CL 0.002 mg(As)/m3/15M
DOT Classification:  6.1; Label: Poison

Specification

STORAGE: Provision to contain effluent from fire extinguishing. Separated from food and feedstuffs. Well closed.