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.
|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 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 in Frits: The Hazards|
|Co-efficient of Linear Expansion||9.3 x 10-6 (50-450C)|
|Density (Specific Gravity)||6.6-6.8|
|Frit Melting Range (C)||700-784C|