Bone ash

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Bone ash

Description

A white powdery material made by calcining bones, usually from cattle. Bone ash primarily contains hydroxyapatite calcium hydroxyapatite with small amounts of phosphate magnesium phosphate, carbonate calcium carbonate, and fluoride calcium fluoride. It is used as a polishing agent and as a flux in ceramics. Bone china can contain 25-50% bone ash. Bone ash has also been used as a pigment called white bone white in grounds for silver point drawings.

Calcined bone

Synonyms and Related Terms

bone earth; bone white (AAT); calcined bone

Raman

BonewhitUCL.jpg

Raman

Bonewhite531.jpg

FTIR

MFA- Bone ash.jpg

XRD

PIG540.jpg

SEM

F540sem.jpg

EDS

F540edsbw.jpg


Hazards and Safety

Noncombustible. Inhalation of ingestion may cause slight problems.

Additional Images


Authority

  • Ralph Mayer, Ralph Mayer, A Dictionary of Art Terms and Techniques, Harper and Row Publishers, New York, 1969 (also 1945 printing)
  • Richard S. Lewis, Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
  • Michael McCann, Michael McCann, Artist Beware, Watson-Guptill Publications, New York City, 1979
  • Robert Fournier, Robert Fournier, Illustrated Dictionary of Practical Pottery, Chilton Book Company, Radnor, PA, 1992
  • Random House, Random House, Webster's Encyclopedic Unabridged Dictionary of the English Language, Grammercy Book, New York, 1997
  • The American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998

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