lead carbonate


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Related to lead carbonate: lead phosphate

lead carbonate

[′led ′kär·bə‚nāt]
(inorganic chemistry)
PbCO3 Poisonous, acid-soluble white crystals decomposing at 315°C; insoluble in alcohol and water; used as a paint pigment.
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it obviously could not have normally anticipated liability for the past actions of a predecessor company), the risk contribution rule cannot pass constitutional muster even for those who participated in the lead carbonate pigment market historically.
Unfortunately, lead carbonates and lead oxides are not readily identifiable by eye.
Steven Thomas, now 14, suffers neurological disorders--including attention-deficit disorder and mild retardation--and is at high risk for future medical complications such as kidney and cardiovascular disease after ingesting paint chips and dust containing white lead carbonate pigments.
Table 1--Oil Absorption Values for Selected Pigments--Rubout Method Pigment Oil Absorption Value Basic lead carbonate 9-12 Barium sulfate (Barytes) 10-20 Barium sulfate (Blanc Fixe) 15 Calcium carbonate 16-18 Zinc oxide 17-20 Red iron oxide 20 Uncoated titanium dioxide 11 Amorphous silica 29 China clay 30 Phthalocyanine blue 34 Milori blue 51 Lampblack 51 Carbon black (medium) 124 Diatomaceous earth 196 Data from a variety of sources.
Encapsulated stabilizers are available in lead carbonate, sulfate and phthalategrades to reduce generation of dust during handling and compounding.
the record is replete with evidence that shows the Pigment Manufacturers actually magnified the risk through their aggressive promotion of white lead carbonate, even despite the awareness of the toxicity of lead.