Title: Lead Tetroxide
CAS Registry Number: 1314-41-6
Additional Names: Lead oxide red; red lead; minium; lead orthoplumbate; mineral orange; mineral red; Paris red; Saturn red; C.I. Pigment Red 105; C.I. 77578
Molecular Formula: O4Pb3
Molecular Weight: 685.60
Percent Composition: O 9.33%, Pb 90.67%
Line Formula: Pb3O4
Literature References: The article of commerce contains about 90% Pb3O4; the remainder being chiefly lead monoxide. Prepn: M. Baudler in Handbook of Preparative Inorganic Chemistry vol. 1, G. Brauer, Ed. (Academic Press, New York, 1963) pp 755-757. Structure: S. T. Gross, J. Am. Chem. Soc. 65, 1107 (1943). Review: Mellor's vol. 7 (1930) pp 672-680. Book: Biologic Effects of Atmospheric Pollutants: Lead (Nat. Acad. Sci., Washington, D.C., 1972) 330 p.
Properties: Bright-red, heavy powder. Poisonous! Dec at ~500° with evolution of oxygen. d 9.1. Insol in water or alcohol. Sol in excess glacial acetic acid, in hot HCl with evolution of Cl, in dil HNO3 in presence of H2O2. LD50 i.p. in rats: 45 mg Pb/100 g (Lead, 1972).
Density: d 9.1
Toxicity data: LD50 i.p. in rats: 45 mg Pb/100 g (Lead, 1972)
Use: Plasters and ointments; manuf colorless glass; glaze for faience; flux for porcelain painting, protective paint for iron and steel; oil-color for ship paints, varnishes; coloring rubber; cement for glass, gas and steam pipes; storage batteries; pencils for writing on glass; manuf lead peroxide, matches. |