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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