Calcium fluoride
- CAS No.
- 7789-75-5
- Chemical Name:
- Calcium fluoride
- Synonyms
- CaF2;FLUORSPAR;FLUORITE;CalciuM floride;Fluorite powder;Calcium difluoride;CALCIUM (II) FLUORIDE;Calcium fluoride anhydrous, powder, 99.99% trace metals basis;Calcium fluoride, anhydrous, ampuled under argon, 99.99% trace metals basis;CALIFp
- CBNumber:
- CB5225741
- Molecular Formula:
- CaF2
- Molecular Weight:
- 78.07
- MOL File:
- 7789-75-5.mol
- MSDS File:
- SDS
- Modify Date:
- 2026/8/28 18:22:08
| Melting point | 1402 °C | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Boiling point | 2500 °C (lit.) | ||||||||||||||
| Density | 3.18 g/mL at 25 °C (lit.) | ||||||||||||||
| refractive index | 1.434 | ||||||||||||||
| Flash point | 2500°C | ||||||||||||||
| storage temp. | -20°C | ||||||||||||||
| solubility | Slightly soluble in acid; insoluble in acetone. | ||||||||||||||
| form | rod | ||||||||||||||
| Specific Gravity | 3.18 | ||||||||||||||
| color | white | ||||||||||||||
| Odor | Odorless | ||||||||||||||
| PH | 4 (20°C, 100g/L in H2O, slurry) | ||||||||||||||
| biological source | rabbit | ||||||||||||||
| Water Solubility | 0.015 g. per 100g H20 at room temperature.(INSOLUBLE) | ||||||||||||||
| Thermal Conductivity | 9.623 W/(m·K) | ||||||||||||||
| Specific Heat Capacity | Cp(crystal): 0.86 J/(g·K), at 25℃ | ||||||||||||||
| Crystal Structure | CaF2 type | ||||||||||||||
| Sensitive | Hygroscopic | ||||||||||||||
| Merck | 14,1667 | ||||||||||||||
| crystal system | Cube | ||||||||||||||
| Space group | Fm3m | ||||||||||||||
| Solubility Product Constant (Ksp) | pKsp: 8.28 | ||||||||||||||
| Lattice constant |
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| Exposure limits |
ACGIH: TWA 2.5 mg/m3 NIOSH: IDLH 250 mg/m3; TWA 2.5 mg/m3 |
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| Dielectric constant | 2.5(Ambient) | ||||||||||||||
| Stability | Stable. Calcium fluoride is inert to organic chemicals and many acids, including HF. It will slowly dissolve in nitric acid. | ||||||||||||||
| Major Application |
electroplating material synthesis precursor |
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| Cosmetics Ingredients Functions |
ORAL CARE ANTIPLAQUE |
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| InChI | 1S/Ca.2FH/h;2*1H/q+2;;/p-2 | ||||||||||||||
| InChIKey | WUKWITHWXAAZEY-UHFFFAOYSA-L | ||||||||||||||
| SMILES | F[Ca]F | ||||||||||||||
| CAS DataBase Reference | 7789-75-5(CAS DataBase Reference) | ||||||||||||||
| NIST Chemistry Reference | Calcium fluoride(7789-75-5) | ||||||||||||||
| EPA Substance Registry System | Calcium difluoride (7789-75-5) |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |  GHS07 |
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|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Warning | |||||||||
| Hazard statements | H303-H315-H319-H335 | |||||||||
| Precautionary statements | P261-P280a-P304+P340-P305+P351+P338-P405-P501a | |||||||||
| PPE | dust mask type N95 (US), Eyeshields, Gloves | |||||||||
| Hazard Codes | Xi,Xn | |||||||||
| Risk Statements | 36/37/38 | |||||||||
| Safety Statements | 26-37/39-36 | |||||||||
| RIDADR | 3288 | |||||||||
| WGK Germany | 1 | |||||||||
| RTECS | EW1760000 | |||||||||
| Hazard Note | Irritant | |||||||||
| TSCA | TSCA listed | |||||||||
| HS Code | 28261900 | |||||||||
| Storage Class | 11 - Combustible Solids | |||||||||
| Hazardous Substances Data | 7789-75-5(Hazardous Substances Data) | |||||||||
| Toxicity | LD50 i.p. in mice: 2638.27 mg/kg (Stratmann) | |||||||||
| REACH Registrations | Active | |||||||||
| NFPA 704 |
|
Calcium fluoride price More Price(36)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich(India) | 449717 | Calcium fluoride anhydrous, powder, 99.99% trace metals basis | 7789-75-5 | 5G | ₹5574.88 | 2022-06-14 | Buy |
| Sigma-Aldrich(India) | 449717 | Calcium fluoride anhydrous, powder, 99.99% trace metals basis | 7789-75-5 | 25G | ₹17763.83 | 2022-06-14 | Buy |
| Sigma-Aldrich(India) | 378801 | Calcium fluoride random crystals, optical grade, 99.99% trace metals basis | 7789-75-5 | 25G | ₹17211.75 | 2022-06-14 | Buy |
| ALFA India | ALF-A10913-36 | Calcium fluoride, 99% | 7789-75-5 | 500g | ₹10829 | 2022-05-26 | Buy |
| ALFA India | ALF-A10913-22 | Calcium fluoride, 99% | 7789-75-5 | 100g | ₹4668 | 2022-05-26 | Buy |
Calcium fluoride Chemical Properties,Uses,Production
Chemical Properties
Calcium fluoride, CaF2, also known as fluorite and feldspar, is a colorless solid composed of cubic crystals. It has a low water solubility, but is readily soluble in ammonium salt solutions. Calcium fluoride is used in the synthesis of hydrofluoric acid and in etching glass.
Calcium Fluoride is not hygroscopic and is relatively inert. It has a sufficiently high resistance to thermal and mechanical shock, and it is easily fabricated into a variety of detector geometries.
Calcium Fluoride has a very low vapor pressure, allowing it to be used in a wide variety of vacuum applications. It is insoluble in water and most organic solvents, permitting radioactive samples in solution to be placed in direct contact with the crystal.
Calcium Fluoride is a transparent material used for detecting γ-rays up to several hundred keV and for detecting charged particles. Because of its low atomic number, the material’s photofraction is relatively small which limits its use in γ-ray spectrometry at higher energies. However, the low atomic number makes Calcium Fluoride an ideal material for the detection of β-particles because of the small amount of backscattering.
Physical properties
White cubic crystal or powder; refractive index 1.434; density 3.18 g/cm3; hardness 4 Mohs; melts at 1,418°C; vaporizes at 2,533°C; insoluble in water (16 mg/L at 20°C); Ksp 3.9x10-11; slightly soluble in dilute mineral acid; soluble in concentrated acids (with reaction).
Uses
Fluorspar is the main primary source of fluorine and its Compounds. In ferrous metallurgy it is used as a flux to increase the fluidity of the slag. The steel industry is the largest consumer; the chemical industry, second and glass and ceramics, third. Synthetic fluorspar is used in the optical industry (transmits u.v. rays), and pure calcium fluoride is used as catalyst in dehydration and dehydrogenations. Used to fluoridate drinking water.
Production Methods
The commercial product is obtained from naturally occurring mineral fluorspar, which is purified and powdered. Also, it may be precipitated by mixing a solution of sodium fluoride with a soluble calcium salt:
Ca(NO3)2 + 2NaF → CaF2 + NaNO3
Alternatively, it may be obtained by treating calcium carbonate with hydrofluoric acid：CaCO3 + 2HF → CaF2 + CO2 + H2O.
Definition
A pure naturally occurring form of calcium fluoride.
General Description
Odorless gray powder or granules. Sinks in water.
Reactivity Profile
Calcium fluoride has weak oxidizing or reducing powers. Redox reactions can however still occur. The majority of compounds in this class are slightly soluble or insoluble in water. If soluble in water, then the solutions are usually neither strongly acidic nor strongly basic. These compounds are not water-reactive.
Hazard
An irritant.
Health Hazard
Little acute toxicity
Industrial uses
Also called fluorite, fluorspar is a crystalline or massive granular mineral of the composition CaF2, used as a flux in the making of steel, for making hydrofluoric acid, in opalescent glass, in ceramic enamels, for snaking artificial cryolite, as a binder for vitreous abrasive wheels,and in the production of white cement. It is a better flux for steel than limestone, making a fluid slag, and freeing the iron of sulfur and phosphorus.
Acid spar is a grade used in making hydrofluoric acid. It is also used for making refrigerants, plastics, and chemicals, and for aluminum reduction. Optical fluorspar is the highest grade but is not common. Fluoride crystals for optical lenses are grown artificially from acid-grade fluorspar. Pure calcium fluoride, Ca2F6, is a colorless crystalline powder used for etching glass, in enamels, and for reducing friction in machine bearings. It is also used for ceramic parts resistant to hydrofluoric acid and most other acids. Calcium fluorite has silicon in the molecule and is a crystalline powder used for enamels. The clear rhombic fluoride crystals used for transforming electric energy into light are lead fluoride, PbF2.
Materials Uses
Calcium fluoride acts as a mineralizer and additive to reduce the clinkering temperature and promote clinker formation in Portland cement production[1]. Calcium fluoride serves as a critical window and structural material in deep ultraviolet lithography, the aerospace industry, and advanced semiconductor and optical manufacturing[3]. Fluoride is incorporated into calcium phytate composites to produce active fillers for resin-based composites[2].
Safety Profile
Moderately toxic by intraperitoneal route. Mildly toxic by ingestion. An experimental teratogen. Other experimental reproductive effects. Mutation data reported. See also FLUORIDES and CALCIUM COMPOUNDS. When heated to decomposition it emits toxic fumes of F-.
Potential Exposure
Calcium fluoride is used for production of hydrofluoric acid; as a flux in steel manufacture; in smelting; electric arc welding, making glass and ceramics; and to fluoridate drinking water.
Shipping
Calcium fluoride is not specifically covered by DOT in its Performance-Oriented Packaging Standards.
Incompatibilities
Dust may form explosive mixture with air. Reacts with water, moist air, and steam, releasing flammable hydrogen gas; and may self-ignite in air. A strong reducing agent; incompatible with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.); contact may cause fires or explosions. Keep away from alkaline materials, strong bases, strong acids, oxoacids, epoxides. Incompatible with metal halogenates, silver fluoride, and tetrahydrofuran
References
[1] Mend, B., Lee, Y., Kwon, D., Kim, J. J., & Chu, Y. (2026). Calcium fluoride as an efficient mineralizer for low-temperature portland cement clinkering: a mechanistic mini review. Frontiers in Materials, 13. https://doi.org/10.3389/fmats.2026.1779429
[2] Buchwald, Z., Domke, A., Jakubowski, M., Ratajczak, M., Buchwald, T., Özcan, M., Voelkel, A., & Sandomierski, M. (2025). Effect of calcium and calcium-fluoride phytate as active fillers in dental resin-based composites on chemical and physical properties. Dental Materials, 41 5, Pages 593-606. https://doi.org/10.1016/j.dental.2025.03.010
[3] Jia, T., Wang, J., Peng, L., Guo, W., Sun, W., & Liu, S. (2025). Angle-resolved ellipsometric analysis of polishing-induced subsurface damages in calcium fluoride crystals for ultra-precision manufacturing. Applied Surface Science, 696, Article 162997. https://doi.org/10.1016/j.apsusc.2025.162997
Calcium fluoride Preparation Products And Raw materials
Raw materials
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chevron_right| Supplier | Tel | Country | ProdList | Advantage | Inquiry |
|---|---|---|---|---|---|
| GLR Innovations | +91 9891111994 | Beijing, India | 4525 | 58 | Inquiry |
| JSK Chemicals | +919879767970 | Gujarat, India | 3745 | 58 | Inquiry |
| Regal Remedies Ltd a Fluorine | +91-9122140861600 +91-6358839972 | Maharashtra, India | 80 | 58 | Inquiry |
| SYNOVA CHEMICALS | +91-9920741772 | Mumbai, India | 427 | 58 | Inquiry |
| Kamman Group | +91-9619902204 | Mumbai, India | 33 | 58 | Inquiry |
| Merck Ltd | +91-2262109800 +91-2262109000 | Maharashtra, India | 272 | 58 | Inquiry |
| Jayfluoride PVT LTD | +91-8128987973 +91-6356977002 | Gujarat, India | 27 | 58 | Inquiry |
| Aarti Drugs Ltd (part of Aarti Group of Industries) | +91-2224019025 +91-9136988221 | Maharashtra, India | 56 | 58 | Inquiry |
| SRC Chemicals Pvt Ltd | +91-2026434078 +91-9130031511 | Maharashtra, India | 4 | 58 | Inquiry |
| Metsil Exports Ltd | +91-9836009945 | West Bengal, India | 13 | 58 | Inquiry |
| Supplier | Advantage |
|---|---|
| GLR Innovations | 58 |
| JSK Chemicals | 58 |
| Regal Remedies Ltd a Fluorine | 58 |
| SYNOVA CHEMICALS | 58 |
| Kamman Group | 58 |
| Merck Ltd | 58 |
| Jayfluoride PVT LTD | 58 |
| Aarti Drugs Ltd (part of Aarti Group of Industries) | 58 |
| SRC Chemicals Pvt Ltd | 58 |
| Metsil Exports Ltd | 58 |
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