Uranium oxide, depleted

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Although expensive, the depleted uranium oxide is sometimes used as a pigment in glazes. It produces red and orange colors at about 940 C while slightly higher temperatures give a soft yellow color (Kawai's yellow). It can turn gray or black at temperatures above 1260 C.

Synonyms and Related Terms

Kawai yellow


Highly toxic by ingestion and inhalation. Human carcinogen.


Physical and Chemical Properties

Composition U3O8
Density 7.3

Resources and Citations

  • Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
  • Robert Fournier, Illustrated Dictionary of Practical Pottery, Chilton Book Company, Radnor, PA, 1992

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