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Calcium fluoride

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Calcium fluoride

EINECS 232-188-7
CAS No. 7789-75-5 Density 3.18 g/cm3
Solubility 0.0015 g/100 mL at 18 °C in water Melting Point 1418 °C
Formula CaF2 Boiling Point 2533 °C
Molecular Weight 78.07 Flash Point 2500°C
Transport Information Appearance odorless gray powder or granules
Safety 26-37/39-36 Risk Codes 36/37/38
Molecular Structure Molecular Structure of 7789-75-5 (Calcium fluoride) Hazard Symbols IrritantXi,HarmfulXn

Calciumfluoride (8CI);Calcium difluoride;Calcium difluoride (CaF2);HO 100;Irtran 3;Calcium fluoride (CaF2);Fluorure de calcium;Fluorspar;Fluorite;Natural fluorite;


Calcium fluoride Consensus Reports

Reported in EPA TSCA Inventory.

Calcium fluoride Standards and Recommendations

OSHA PEL: TWA 2.5 mg(F)/m3
ACGIH TLV: TWA 2.5 mg(F)/m3; BEI: 3 mg/g creatinine of fluorides in urine prior to shift; 10 mg/g creatinine of fluorides in urine at end of shift.
NIOSH REL: (Inorganic Fluorides) TWA 2.5 mg(F)/m3

Calcium fluoride Specification

The IUPAC name of Calcium fluoride is calcium difluoride. With the CAS registry number 7789-75-5, it is also named as Fluorure de calcium. The product's categories are Coating Material; Ch Fluorine Compounds; Inorganic Salts; Chemical Mineral Raw Materials; Inorganics, and the other registry number is 29070-15-3. Besides, it is odorless gray powder or granules, which should be stored in ventilated, dry warehouse away from acids. It is stable and incompatible with acids. In addition, its molecular formula is CaF2 and molecular weight is 78.07. This ionic compound of calcium and fluorine occurs naturally as the mineral fluorite. It is the source of most of the world's fluorine.

The other characteristics of this product can be summarized as: (1)H-Bond Donor: 0; (2)H-Bond Acceptor: 2; (3)Rotatable Bond Count: 0; (4)Exact Mass: 77.959398; (5)MonoIsotopic Mass: 77.959398; (6)Topological Polar Surface Area: 0; (7)Heavy Atom Count: 3; (8)Complexity: 2.8; (9)Density: 3.18 g/cm3; (10)Melting point: 1418 °C; (11)Boiling point: 2533 °C; (12)Flash point: 2500 °C; (13)Solubility in water: 0.0015 g/100 mL at 18 °C; (14)EINECS: 232-188-7.

Preparation of Calcium fluoride: this chemical can be prepared by treating Calcium carbonate with Hydrofluoric acid:
CaCO3 + 2 HF → CaF2 + CO2 + H2O

Uses of Calcium fluoride: this chemical is commonly used as a window material for both infrared and ultraviolet wavelengths in the laboratory. This use has largely been superseded by newer glasses and computer aided design. Moreover, Uranium-doped Calcium fluoride was the second type of solid state laser invented. It is also used as a flux for melting and liquid processing of iron, steel and their composites. Furthermore, it can react with concentrated sulfuric acid to produce Hydrogen fluoride:
CaF2(s) + H2SO4 → CaSO4(solid) + 2 HF(g)

When you are using this chemical, please be cautious about it as the following: it is irritating to eyes, respiratory system and skin. In case of contact with eyes, please rinse immediately with plenty of water and seek medical advice. And you should wear suitable protective clothing, gloves and eye/face protection.

People can use the following data to convert to the molecule structure.
(1)SMILES: [Ca+2].[F-].[F-]
(2)InChI: InChI=1/Ca.2FH/h;2*1H/q+2;;/p-2
(4)Std. InChI: InChI=1S/Ca.2FH/h;2*1H/q+2;;/p-2

The toxicity data is as follows:

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
guinea pig LDLo oral > 5gm/kg (5000mg/kg)   Merck Index. Vol. 11, Pg. 253, 1989.
mammal (species unspecified) LD intraperitoneal > 10gm/kg (10000mg/kg)   Meditsina Truda i Promyshlennaya Ekologiya. Industrial Medicine and Ecology. Vol. (7), Pg. 32, 1994.
mouse LD50 intraperitoneal 2638mg/kg (2638mg/kg)   Deutsche Zahnaerztliche Zeitschrift. Vol. 34, Pg. 484, 1979.
rat LD50 intraperitoneal > 1500mg/kg (1500mg/kg)   U.S. Atomic Energy Commission, University of Rochester, Research and Development Reports. Vol. UR-154, Pg. 1951,


Vestnik Akademii Meditsinskikh Nauk SSSR. Journal of the Academy of Medical Sciences of the USSR. Vol. (2), Pg. 28, 1977.

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