Calcium fluoride

Calcium fluoride
Identifiers
CAS Number	7789-75-5 ;
3D model (JSmol)	Interactive image; Interactive image;
ChEBI	CHEBI:35437 ;
ChemSpider	23019 ;
ECHA InfoCard	100.029.262
EC Number	232-188-7;
PubChem CID	24617;
RTECS number	EW1760000;
UNII	O3B55K4YKI ;
CompTox Dashboard (EPA)	DTXSID4050487 ;
	InChI InChI=1S/Ca.2FH/h;21H/q+2;;/p-2 Key: WUKWITHWXAAZEY-UHFFFAOYSA-L ; InChI=1/Ca.2FH/h;21H/q+2;;/p-2 Key: WUKWITHWXAAZEY-NUQVWONBAZ;
	SMILES [Ca+2].[F-].[F-]; F[Ca]F;
Properties
Chemical formula	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)
Solubility in water	0.015 g/L (18 °C); 0.016 g/L (20 °C)
Solubility product (Ksp)	3.9 × 10−11
Solubility	insoluble in acetone; slightly soluble in acid
Magnetic susceptibility (χ)	−28.0·10−6 cm3/mol
Refractive index (nD)	1.4338
Structure
Crystal structure	cubic crystal system, cF12
Space group	Fm3m, #225
Lattice constant	a = 5.451 Å, b = 5.451 Å, c = 5.451 Å α = 90°, β = 90°, γ = 90°
Coordination geometry	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)	0 0 0
Flash point	Non-flammable
	Lethal dose or concentration (LD, LC):
LDLo (lowest published)	>5000 mg/kg (oral, guinea pig); 4250 mg/kg (oral, rat)
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). verify (what is ?) Infobox references

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.

^ Pradyot Patnaik. Handbook of Inorganic Chemicals. McGraw-Hill, 2002, ISBN 0-07-049439-8.
^ 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.
^ "Fluorides (as F)". Immediately Dangerous to Life or Health Concentrations (IDLH). National Institute for Occupational Safety and Health (NIOSH).

[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).

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