Animal black
any of various black pigments, as boneblack or ivory black, obtained from calcined animal matter.
historical examples
if the citric acid is not sufficiently white, it is decolorised by digestion with animal black.
cooley’s cyclopdia of practical receipts and collateral information in the arts, manufactures, professions, and trades…, sixth edition, volume i arnold cooley
if the heating of the animal black exceeds 500° the product hardens, diminishes in volume, and loses its porosity.
scientific american supplement, no. 288 various
when burnt, it gave an animal black as deep in colour as that from recent bone.
quarterly journal of science, literature and the arts, july-december, 1827 various
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