Lead Carbonate

Alternate Names: White lead

Oxide	Analysis	Formula
PbO	86.51%	1.00
CO2	13.49%	n/a
Oxide Weight		223.20
Formula Weight		258.00

Notes

Lead carbonate is made industrially from lead(II) acetate and carbon dioxide and occurs naturally as the mineral Cerussite.

Lead carbonate is an extremely fine powder which can easily become airborne creating a major risk of inhalation. It decomposes at 400C and a product of the decomposition is the oxide PbO. It is much more likely to vaporize in a reduction firing atmosphere (which can easily happen in electric kilns).

Related Information

Links

Materials	Litharge
Materials	Lead Bisilicate Frit A standard frit of 1 molar part of PbO and 2 of SiO2. It is considered stable and non-leachable.
Hazards	Lead Toxicology
Hazards	Lead in Ceramic Glazes Lead glazes may or may not be hazardous. This topic is not as clear as you might think.
Typecodes	Generic Material Generic materials are those with no brand name. Normally they are theoretical, the chemistry portrays what a specimen would be if it had no contamination. Generic materials are helpful in educational situations where students need to study material theory (later they graduate to dealing with real world materials). They are also helpful where the chemistry of an actual material is not known. Often the accuracy of calculations is sufficient using generic materials.
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.
Oxides	PbO - Lead Oxide
Minerals	Cerussite Principal mineral source of lead.
Minerals	Galena The most important mineral source of lead.
URLs	http://en.wikipedia.org/wiki/White_lead White lead at Wikipedia

Data

Frit Softening Point	500C D
Density (Specific Gravity)	9.10

By Tony Hansen
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