Lead sulfate, basic
Description
A white pigment that is made the the roasting of galena (lead sulfide) in an oxygen rich atmosphere. Basic lead sulfate is used as a paint pigment, typically in combination with zinc oxide. It is also used in ceramic glazes.
Synonyms and Related Terms
sublimed white lead; basic lead sulfate; basic lead sulphate (Br.); sulfato básico de plomo (Esp.); sulfato básico de chumbo (Port.); Bartlet white lead; basic sulphate white lead; Lewis white lead; white lead sulfate; lanarkite
Other Properties
Slightly soluble in hot water and acids.
| Composition | PbSO4-PbO |
|---|---|
| Melting Point | 977 |
| Density | 6.92 |
Hazards and Safety
Toxic by inhalation or ingestion. Noncombustible. Skin contact may cause irritation or ulcers. Carcinogen, teratogen, suspected mutagen.
Additional Information
° M-C. Corbeil, P.J. Sirois, E.A. Moffatt, "The use of a white pigment patented by Freeman by Tom Thomson and the Group of Seven" ICOM preprints, Lyons, 1999, p369.
Authority
- Thomas Gregory, The Condensed Chemical Dictionary, Reinhold Publishing, New York, 3rd ed., 1942
- G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 444
- Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
- Susan E. Schur, Conservation Terminology: A review of Past & Current Nomenclature of Materials, Technology and Conservation, Spring (p.34-39); Summer (p.35-38); Fall (p.25-36), 1985