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boneblack
[ bohn-blak ]
noun
- a black, carbonaceous substance obtained by calcining bones ( def ) in closed vessels, used as a black pigment, a decolorizing agent, etc.
boneblack
/ ˈbəʊnˌblæk /
noun
- a black residue from the destructive distillation of bones, containing about 10 per cent carbon and 80 per cent calcium phosphate, used as a decolorizing agent and pigment
Word History and Origins
Origin of boneblack1
Example Sentences
While they may improve conditions somewhat, the only solution to such a problem is the use of the boneblack process.
Animal charcoal or boneblack.—This material is made from bones of animals, by burning them in a kiln built for that purpose.
The following is commended for the preparation of a black ink or paste for use with stencils:—Boneblack, 1 lb.; molasses, 8 ozs.; sulphuric acid, 4 ozs.; dextrine, 2 ozs.; water sufficient.
Muriate of potash costs $40 and upwards per ton, sulfate about $48, dissolved boneblack about $24, ground bone about $30, kainit about $13, and nitrate of soda about 2-1/4 cents per pound.
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