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Basic Information
CAS No.: 1344-40-7
Name: LEAD PHOSPHITE, DIBASIC
Molecular Structure:
Molecular Structure of 1344-40-7 (LEAD PHOSPHITE, DIBASIC)
Formula: H2O.2HO.2O3P.2O.2Pb
Molecular Weight: 287.18000
Synonyms: Lead oxide phosphonate (Pb3O2(HPO3)), hemihydrate (8CI);C.I. 77620;Dibasic lead phosphite;Lead oxide phosphonate (Pb3O2(HPO3)), hydrate (2:1);Lead dibasic phosphite;Lead phosphite, dibasic;
Density: 6.1
PSA: 79.94000
LogP: -0.31420
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Chemistry

Product Name: Lead dibasic phosphite (CAS NO.1344-40-7)


Molecular Formula: HO5PPb3
Molecular Weight: 733.58g/mol
Mol File: 1344-40-7.mol
Appearance: Finely ground white crystalline solid
Water Solubility: Insoluble in water

Toxicity Data With Reference

Fire may produce irritating and/or toxic gases. Contact may cause burns to skin and eyes. Contact with molten substance may cause severe burns to skin and eyes. Runoff from fire control may cause pollution.

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
rat LD50 oral > 6gm/kg (6000mg/kg)   Arzneimittel-Forschung. Drug Research. Vol. 10, Pg. 44, 1960.

Safety Profile

A poison by ingestion. A flammable solid. When heated to decomposition it emits toxic vapors of lead and POx.
Flammable/combustible material. May be ignited by friction, heat, sparks or flames. Some may burn rapidly with flare burning effect. Powders, dusts, shavings, borings, turnings or cuttings may explode or burn with explosive violence. Substance may be transported in a molten form at a temperature that may be above its flash point. May re-ignite after fire is extinguished.

Standards and Recommendations

ACGIH TLV: TWA 0.15 mg(Pb)/m3
DOT Classification:  4.1; Label: Flammable Solid

Specification

 Lead dibasic phosphite ,its CAS NO. is 1344-40-7,the synonyms is  Dibasic lead phosphite ; Lead phosphite, dibasic ; C.I.77620 ; Dibasicleadmetaphosphate ; Leaddibasicphosphite ; Leadoxidephosphonate,hemihydrate ; dibasic ; Lead hydroxide oxide phosphite (pb3(oh)o(po3)), hydrate (2:1) .