bone black


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bone black,

solid black material, largely carbon, produced by heating animal bones to high temperatures in the absence of air so as to drive off volatile substances. Finely divided bone black is useful as a pigment; bone char, a similar material, is an important source of activated charcoal for use in refining and decolorizing sugar.

bone black

[′bōn ‚blak]
(materials)
A black substance made by carbonizing crushed, defatted bones in closed vessels; used as a paint and varnish pigment, as a decolorizing absorbent in clarifying shellac, in cementation, and in gas masks. Also known as animal black; bone char.

animal black

A black pigment made by charring of animal bones; sometimes used in paints, although carbon black generally is preferred for tinting strength and blackness. Available in three grades: boneblack, drop black, and ivory black.
References in periodicals archive ?
While hardware J1708 and microprocessor code implementations exist, the goal was to reduce the amount of auxiliary processors on the printed circuit card and implement the protocol natively within the Beagle Bone Black, which has the TI AM335x processor.
Both as a documentation of one black woman's girlhood and as a beautifully crafted narrative, Bone Black is a significant addition to the traditions of autobiography by women and African Americans.
Company's bone black pigments are specialty products reportedly characterized by high masstone, easy dispersibility, low oil absorption and low cost.
Company's bone black pigments are specialty products characterized by high masstone, easy dispersibility, low oil absorption and low cost.