Calcium fluoride

Calcium fluoride
Identifiers
3D model (JSmol)
ChEBI
ChemSpider
ECHA InfoCard 100.029.262 Edit this at Wikidata
EC Number
  • 232-188-7
RTECS number
  • EW1760000
UNII
  • InChI=1S/Ca.2FH/h;2*1H/q+2;;/p-2 checkY
    Key: WUKWITHWXAAZEY-UHFFFAOYSA-L checkY
  • InChI=1/Ca.2FH/h;2*1H/q+2;;/p-2
    Key: WUKWITHWXAAZEY-NUQVWONBAZ
  • [Ca+2].[F-].[F-]
  • F[Ca]F
Properties
CaF2
Molar mass 78.075 g·mol−1
Appearance White crystalline solid (single crystals are transparent)
Density 3.18 g/cm3
Melting point 1,418 °C (2,584 °F; 1,691 K)
Boiling point 2,533 °C (4,591 °F; 2,806 K)
0.015 g/L (18 °C)
0.016 g/L (20 °C)
3.9 × 10−11 [1]
Solubility insoluble in acetone
slightly soluble in acid
−28.0·10−6 cm3/mol
1.4338
Structure
cubic crystal system, cF12[2]
Fm3m, #225
a = 5.451 Å, b = 5.451 Å, c = 5.451 Å
α = 90°, β = 90°, γ = 90°
Ca, 8, cubic
F, 4, tetrahedral
Hazards
Occupational safety and health (OHS/OSH):
Main hazards
 Reacts with concentrated sulfuric acid to produce hydrofluoric acid
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 0: Exposure under fire conditions would offer no hazard beyond that of ordinary combustible material. E.g. sodium chlorideFlammability 0: Will not burn. E.g. waterInstability 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogenSpecial hazards (white): no code
0
0
0
Flash point Non-flammable
Lethal dose or concentration (LD, LC):
>5000 mg/kg (oral, guinea pig)
4250 mg/kg (oral, rat)[3]
Safety data sheet (SDS) ICSC 1323
Related compounds
Other anions
 Calcium chloride
Calcium bromide
Calcium iodide
Other cations
 Beryllium fluoride
Magnesium fluoride
Strontium fluoride
Barium fluoride
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Calcium fluoride is the inorganic compound of the elements calcium and fluorine with the formula CaF2. It is a white solid that is practically insoluble in water. It occurs as the mineral fluorite (also called fluorspar), which is often deeply coloured owing to impurities.

  1. ^ Pradyot Patnaik. Handbook of Inorganic Chemicals. McGraw-Hill, 2002, ISBN 0-07-049439-8.
  2. ^ X-ray Diffraction Investigations of CaF2 at High Pressure, L. Gerward, J. S. Olsen, S. Steenstrup, M. Malinowski, S. Åsbrink and A. Waskowska, Journal of Applied Crystallography (1992), 25, 578–581, doi:10.1107/S0021889892004096.
  3. ^ "Fluorides (as F)". Immediately Dangerous to Life or Health Concentrations (IDLH). National Institute for Occupational Safety and Health (NIOSH).