Lead silicate

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A white, crystalline powder that is made by the reaction of Lead acetate and Sodium silicate. Lead silicate is noncombustible and is used in fireproofing fabrics. It is also used as a glaze for ceramics and a pigment in water-based wood primers.

Synonyms and Related Terms

lead metasilicate; lead bisilicate; lead frit; alamosite

Other Properties

Insoluble in most solvents.

Composition PbSiO3
CAS 10099-76-0
Melting Point 710-800

Hazards and Safety

Toxic by inhalation or ingestion. Noncombustible but may form lead fumes during firing. Skin contact may cause irritation or ulcers. Carcinogen, teratogen, suspected mutagen.

Sources Checked for Data in Record

  • 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
  • Michael McCann, Artist Beware, Watson-Guptill Publications, New York City, 1979
  • Guy Weismantel, Paint Handbook, McGraw-Hill Book Company, New York, 1981

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