bone black
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.
Citation Information
Article Title:
bone black
Website Name:
Encyclopaedia Britannica
Publisher:
Encyclopaedia Britannica, Inc.
Date Published:
15 January 2018
Access Date:
February 23, 2025