Ceric oxide
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Description
A whitish or pale yellow powder used as an abrasive, catalyst and as an ingredient in glass and glazes. As a commercial abrasive, ceric oxide is a brown color due to impurities. It is used to polish gemstones and glass, especially optical surfaces and automobile windshields. Ceric oxide is added to soda-lime mixtures as a decolorizer and to ceramics to increase opacity.
Synonyms and Related Terms
ceria; cerium oxide; cerium dioxide; Ceriorouge; optician's rouge
Risks
- Noncombustible.
- Inhalation and contact may cause irritation.
- Fisher Scientific: MSDS
Physical and Chemical Properties
Soluble in sulfuric acid. Insoluble in water and dilute acid.
| Composition | CeO2 |
|---|---|
| CAS | 1306-38-3 |
| Melting Point | 2600 C |
| Density | 6.1 g/ml |
| Molecular Weight | mol. wt. = 172.1188 |
Comparisons
Properties of Common Abrasives
Resources and Citations
- G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 177
- Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
- Random House, Webster's Encyclopedic Unabridged Dictionary of the English Language, Grammercy Book, New York, 1997
- The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 2035
- The American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998
- Michael McCann, Artist Beware, Watson-Guptill Publications, New York City, 1979
- MSDS Sheet Comment: Fisher Scientific: density = 6.1