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bone black

charcoal
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Also known as: animal charcoal, bone char, bone charcoal
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Also called:
bone char, or bone charcoal

bone black, a form of charcoal produced by heating bone in the presence of a limited amount of air. It is used in removing coloured impurities from liquids, especially solutions of raw sugar. Bone black contains only about 12 percent elemental carbon, the remainder being made up principally of calcium phosphate and calcium carbonate.

This article was most recently revised and updated by Adam Augustyn.