Difference between revisions of "Calcium fluoride"
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== Description == | == Description == | ||
| − | White powder primarily obtained from the mineral [ | + | White powder primarily obtained from the mineral [[fluorite]]. Calcium fluoride may be made synthetically by the reaction of [[soda lime]] with anhydrous [[hydrogen fluoride]]. It is used in the production of abrasives, ceramic glazes, enamels, glass, soldering agents, welding agents, pyrotechnics, and for metal surface treatment. |
== Synonyms and Related Terms == | == Synonyms and Related Terms == | ||
Revision as of 13:15, 9 January 2014
Description
White powder primarily obtained from the mineral Fluorite. Calcium fluoride may be made synthetically by the reaction of Soda lime with anhydrous Hydrogen fluoride. It is used in the production of abrasives, ceramic glazes, enamels, glass, soldering agents, welding agents, pyrotechnics, and for metal surface treatment.
Synonyms and Related Terms
calcium difluoride; fluorspar; fluorite; Derbyshire spar
Other Properties
Cubic crystals. Luminous when heated. Autofluorescent.
Insoluble in water. Dissolved by concentrated mineral acids with evolution of HF.
| Composition | CaF2 |
|---|---|
| CAS | 7789-75-5 |
| Mohs Hardness | 4.0 |
| Melting Point | 1403 |
| Density | 3.18 |
| Molecular Weight | mol. wt. = 78.07 |
| Refractive Index | 1.433-1.435 |
| Boiling Point | 2500 |
Hazards and Safety
Contact may cause irritation. Ingestion may be harmful. \Heating may release fluorine gas.
Mallinckrodt Baker: MSDS
Authority
- G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 372
- The Merck Index, Susan Budavari (ed.), Merck Research Labs, Whitehouse Station, NJ, 12th Edition, 1996 Comment: entry 1709
- The Condensed Chemical Dictionary, Francis Turner (ed.), Reinhold Publishing Corp., New York City, 3rd edition, 1942
- Michael McCann, Artist Beware, Watson-Guptill Publications, New York City, 1979
- The American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998