Title: Lead Acetate
CAS Registry Number: 301-04-2
Additional Names: Neutral lead acetate; normal lead acetate; sugar of lead; salt of Saturn
Molecular Formula: C4H6O4Pb
Molecular Weight: 325.29
Percent Composition: C 14.77%, H 1.86%, O 19.67%, Pb 63.70%
Line Formula: Pb(CH3COO)2
Literature References: Toxicity data: W. R. Bradley, W. G. Fredrick, Ind. Med. 10, Ind. Hyg. Sect. 2, 15 (1941). Review of safety assessment in hair coloring: A. J. Cohen, F. J. C. Roe, Food Chem. Toxicol. 29, 485-507 (1991); of toxicology and human exposure: Toxicological Profile for Lead (PB99-166704, 1999) 640 pp.
Properties: Occurs as trihydrate, colorless crystals or white granules or powder; slight acetic odor; slowly effloresces. Poisonous! Takes up CO2 from air and becomes incompletely sol. d 2.55. mp 75° when rapidly heated; at a little above 100° it begins to lose acetic acid; dec completely above 200°. One gram dissolves in 1.6 ml water, 0.5 ml boiling water, 30 ml alcohol; freely sol in glycerol. Aq solns of lead acetate dissolve lead monoxide. pH of 5% aq soln at 25° = 5.5-6.5. Keep well closed. LD50 i.p. in rats: 15 mg Pb/100g (Bradley, Fredrick).
Melting point: mp 75° when rapidly heated
Density: d 2.55
Toxicity data: LD50 i.p. in rats: 15 mg Pb/100g (Bradley, Fredrick)
CAUTION: This substance is reasonably anticipated to be a human carcinogen: Report on Carcinogens, Eleventh Edition (PB2005-104914, 2004) p III-158.
Use: Mordant in cotton dyes; lead coating for metals; drier in paints, varnishes and pigment inks; colorant in hair dyes. Weighting silks; manuf lead salts, chrome-yellow; as analytical reagent for detection of sulfide, determination of CrO3, MoO3.
Therap-Cat: Astringent.
Therap-Cat-Vet: Astringent and sedative (usually in lotions) for bruises and superficial inflammation. Has been used internally in diarrheas.
Keywords: Astringent. |