Lead sesquisilicate

Description

A type of Lead silicate used by potters as a lead frit glaze. Lead sesquisilicate is toxic and may form lead fumes during firing.

Synonyms and Related Terms

lead frit

Risks

• Highly toxic by ingestion and inhalation.
• Human carcinogen, teratogen and suspected mutagen.
• CTM Potters Supplies: SDS

Physical and Chemical Properties

Composition	2PbO - 3SiO2
Melting Point	690-850 C

Resources and Citations

• Michael McCann, Artist Beware, Watson-Guptill Publications, New York City, 1979

• Robert Fournier, Illustrated Dictionary of Practical Pottery, Chilton Book Company, Radnor, PA, 1992