Difference between revisions of "Tungsten trioxide"
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anhydrous tungstic acid; anhydrous wolframic acid; tungstic oxide; tungsten oxide | anhydrous tungstic acid; anhydrous wolframic acid; tungstic oxide; tungsten oxide | ||
| − | + | == Risks == | |
| − | == | + | * Toxic by ingestion and inhalation. |
| + | * Noncombustible. | ||
| + | * Fisher Scientific: [https://fscimage.fishersci.com/msds/01666.htm MSDS] | ||
| + | |||
| + | ==Physical and Chemical Properties== | ||
Soluble in hydrofluoric acid and alkalis. | Soluble in hydrofluoric acid and alkalis. | ||
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! scope="row"| Melting Point | ! scope="row"| Melting Point | ||
| − | | 1473 | + | | 1473 C |
|- | |- | ||
! scope="row"| Density | ! scope="row"| Density | ||
| − | | 7.16 | + | | 7.16 g/ml |
|- | |- | ||
! scope="row"| Molecular Weight | ! scope="row"| Molecular Weight | ||
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| − | == | + | ==Resources and Citations== |
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* G.S.Brady, ''Materials Handbook'', McGraw-Hill Book Co., New York, 1971 Comment: p. 694 | * G.S.Brady, ''Materials Handbook'', McGraw-Hill Book Co., New York, 1971 Comment: p. 694 | ||
Latest revision as of 09:52, 22 June 2022
Description
Yellow powder used as for fireproofing textiles. Tungsten trioxide, or anhydrous tungstic acid, is also used as a high temperature yellow Pigment in ceramics.
Synonyms and Related Terms
anhydrous tungstic acid; anhydrous wolframic acid; tungstic oxide; tungsten oxide
Risks
- Toxic by ingestion and inhalation.
- Noncombustible.
- Fisher Scientific: MSDS
Physical and Chemical Properties
Soluble in hydrofluoric acid and alkalis.
| Composition | WO3 |
|---|---|
| CAS | 1314-35-8 |
| Melting Point | 1473 C |
| Density | 7.16 g/ml |
| Molecular Weight | mol. wt. = 231.86 |
Resources and Citations
- G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 694
- 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 9946
- Susan E. Schur, Conservation Terminology: A review of Past & Current Nomenclature of Materials, Technology and Conservation, Spring (p.34-39); Summer (p.35-38); Fall (p.25-36), 1985
- Robert Fournier, Illustrated Dictionary of Practical Pottery, Chilton Book Company, Radnor, PA, 1992