Bismuth oxide
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Description
A heavy yellow powder that occurs naturally as the mineral bismite. Bismuth oxide, also called bismuth yellow, is used as a Pigment for enamels, Glass, ceramics, and Porcelain.
Synonyms and Related Terms
bismuth trioxide; óxido de bismuto (Esp., Port.); oxyde de bismuth (Fr.); ossido di bismuto (It.); bismite; bismuth yellow
Other Properties
Soluble in acid. Insoluble in water. Color is yellow to green
| Composition | Bi2O3 |
|---|---|
| CAS | 1304-76-3 |
| Mohs Hardness | 4-5 (for bismite) |
| Melting Point | 820 |
| Density | 8.8 - 8.9 |
| Molecular Weight | mol. wt. = 465.96 |
| Boiling Point | 1890 |
Hazards and Safety
Ingestion may cause slight discomfort. Chronic ingestion may produce black lines on gums and bad breath. Inhalation and contact are not expected to be hazardous.
Mallinckrodt Baker: MSDS
Sources Checked for Data in Record
- Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
- The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 1314
- Wikipedia, the free encyclopedia, at http://www.wikipedia.com Comment: http://en.wikipedia.org/wiki/Bismuth_oxide (Accessed Mar. 20, 2006)