| Chemical |
Calcium fluoride |
| CAS-number : |
7789-75-5 |
| |
| Synonyms : |
| Fluorspar. |
| |
| Sumformula of the chemical : |
| CaF2
CaF2 |
| EINECS-number : |
| 2321887 |
| |
| Uses : |
Single pure (99.93 %) crystals of calcium fluoride are also
produced for use in spectroscopy, electronics, lasers, and
hightemperature dry-film lubricants.
Fluorspar: Principal
source of fluorine and its compounds by way of hydrogen
fluoride, flux in open hearth steel furnaces and in metal
smelting, in ceramics, for synthetic cryolite, in carbon
elctrodes, emery wheels, electric arc welders, certain cements,
dentifrices, phosphors, paint pigment, catalys in wood
preservatives, optical equipment.
|
| |
| State and appearance : |
White powder occurring in nature as fluorite (pure form) or
fluorspar (mineral).
Fluorspar: natural calcium fluoride,
yellow, green or purple crystals.
|
| |
| Melting point, °C : |
| 1402 |
|
| 1350 |
Fluorspar |
| |
| Boiling point, °C : |
| 2500 |
|
| |
| Other physicochemical properties : |
Insoluble in water.
An irritant (Sax & Lewis 1987).
|
| |
| LD50 values to mammals in non-oral exposure , mg/kg : |
| 1500 |
1500 - 2500, 24 hr, ipr-small rodents |
| 2500 |
Hodge & Smith 1965 |
| |
| Other information : |
Fluorspar: occurence: US, Canada, Europe, Mexico (Sax & Lewis
1987).
|
References |
| 2285 | Anon. 1989.
Miljöfarliga ämnen - exempellista och vetenskaplig
dokumentation. 303 p.
Stockholm.
Rapport från
kemikalieinspektionen (KEMI) 10. |
| 2699 | Hodge, H.C. & Smith, F.A. 1965.
Fluorine Chemistry, Vol.
IV.
Academic Press Inc., New York and London. |
| 2522 | Sax, N.I. & Lewis, R.J.Sr. 1987.
Hawley's condensed chemical
dictionary.
Eleventh edition.
Van Nostrand Reinhold Company.
New York. pp. 1288. |
| 2688 | US Bureau of Mines 1980.
Mineral industry surveys.
Fluorspar in
1979.
U.S.
Dept. of the Interior, Washington, D.C. |
| 2690 | USEPA 1980g.
Development document for effluent limitations
guidelines and standards for the iron and steel manufacturing.
EPA 440/1-80/024-6. |
