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Lead Monosilicate Frit

Oxide Analysis Formula
PbO 85.00% 1.00
SiO2 15.00% 0.66
Oxide Weight 262.59
Formula Weight 262.59


This is a standard frit formula of 1 molar part of PbO and .66 of SiO2. The powder is light yellow. Some people consider a lead monosilicate to be 1PbO - 1SiO2. Frits of both chemistries are available and they both claim to be lead monosilicate.

Related Information


Materials Ferro Frit 3327
Materials Ferro Frit 3377
Materials Solargil Frit FR1
Materials Frit A 1316
Materials Ceradel Frit C 1251
Materials Lead Bisilicate Frit
Materials H19 Frit
Materials Frit 1843
Typecodes Frit
Typecodes Flux Source
Materials that source Na2O, K2O, Li2O, CaO, MgO and other fluxes but are not feldspars or frits. Remember that materials can be flux sources but also perform many other roles. For example, talc is a flux in high temperature glazes, but a matting agent in low temperatures ones. It can also be a flux, a filler and an expansion increaser in bodies.
Hazards Lead Toxicology
Hazards Lead in Frits: The Hazards


Co-efficient of Linear Expansion9.3 x 10-6 (50-450C)
Density (Specific Gravity)6.6-6.8
Frit Melting Range (C)700-784C

By Tony Hansen

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