Lead sulfate, basic

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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.

Sources Checked for Data in Record

  • 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