Uranium oxide, depleted

Description

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

Risks

• Highly toxic by ingestion and inhalation. Human carcinogen.
• May explode or self-ignite in air.
• EPA: info

Physical and Chemical Properties

• Insoluble in water, alcohols, and alkalies.
• Soluble in acetone, acids.

Composition	U3O8
CAS #	7440-61-1
Density	7.3 g/ml

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