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lead chromate

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lead chromate [′led ′krō‚māt]
(inorganic chemistry)
PbCrO4Poisonous, water-insoluble yellow crystals melting at 844°C; soluble in acids; used as a paint pigment.

lead chromate
One of a series of opaque pigments, orange to yellow in color, with high tinting strength.


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Examples included the use of poisonous lead compounds such as red lead to colour cheese and yellow lead chromate in custard powders and the poison strychnine used as an alternative to hops for bitterness in beer.
The plan now is to reduce lead levels in the remaining 10% of all colored fibers that still require lead chromate to meet the consumer's demand for long-term color-fastness.
Chromium oxide was discovered as being a part of crocoite, better known as red lead, which is actually lead chromate, sometimes containing some molybdate and perhaps vanadium.
 
 
 
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