Chemical Properties crystal structure Uses Production method
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Calcium fluoride

Chemical Properties crystal structure Uses Production method
Product Name
Calcium fluoride
CAS No.
7789-75-5
Chemical Name
Calcium fluoride
Synonyms
CaF2;FLUORSPAR;FLUORITE;CalciuM floride;Calcium fluoride anhydrous, powder, 99.99% trace metals basis;Calcium fluoride, anhydrous, ampuled under argon, 99.99% trace metals basis;CALIFp;uorite;irtran3;Irtran 3
CBNumber
CB5225741
Molecular Formula
CaF2
Formula Weight
78.07
MOL File
7789-75-5.mol
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Calcium fluoride Property

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
color 
white
Specific Gravity
3.18
Water Solubility 
0.015 g. per 100g H20 at room temperature.(INSOLUBLE)
Sensitive 
Hygroscopic
Crystal Structure
CaF2 type
crystal system
Cube
Merck 
14,1667
Solubility Product Constant (Ksp)
pKsp: 8.28
Space group
Fm3m
Lattice constant
a/nmb/nmc/nmα/oβ/oγ/oV/nm3
0.5460.5460.5469090900.1631
Exposure limits
ACGIH: TWA 2.5 mg/m3
NIOSH: IDLH 250 mg/m3; TWA 2.5 mg/m3
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.
InChIKey
WUKWITHWXAAZEY-UHFFFAOYSA-L
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)
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Safety

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 
Yes
HS Code 
28261900
Hazardous Substances Data
7789-75-5(Hazardous Substances Data)
Toxicity
LD50 i.p. in mice: 2638.27 mg/kg (Stratmann)
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Warning
Hazard statements

H303May be harmfulif swallowed

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P304+P340IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P405Store locked up.

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
449717
Product name
Calcium fluoride
Purity
anhydrous, powder, 99.99% trace metals basis
Packaging
5g
Price
$109
Updated
2024/03/01
Sigma-Aldrich
Product number
NIST180
Product name
Fluorspar
Purity
NIST? SRM? 180, high grade
Packaging
120g
Price
$731
Updated
2024/03/01
Sigma-Aldrich
Product number
1.02840
Product name
Calcium fluoride
Purity
precipitated pure, Technipur?
Packaging
1KG
Price
$202
Updated
2024/03/01
Sigma-Aldrich
Product number
1.02840
Product name
Calcium fluoride
Purity
precipitated pure, Technipur?
Packaging
50KG
Price
$5220
Updated
2024/03/01
Sigma-Aldrich
Product number
378801
Product name
Calcium fluoride
Purity
random crystals, optical grade, 99.99% trace metals basis
Packaging
25g
Price
$183
Updated
2023/06/20
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Calcium fluoride Chemical Properties,Usage,Production

Chemical Properties

Calcium fluoride is the main ingredient of fluorspar or fluorite, the chemical formula is CaF2, it is colorless cubic crystal or white powder. The relative density is 3.18, the melting point is 1423℃, boiling point is about 2500 ℃. The solubility in water is minimal , 100g water can dissolve only 0.0016g at 18 ℃, it is insoluble in acetone, but soluble in hydrochloric acid, hydrofluoric acid, sulfuric acid, nitric acid and ammonium salt solution, and it can not react with dilute acid, but can react with hot concentrated sulfuric acid and generate hydrofluoric acid, it can form a complex when dissolves in aluminum and iron salts (Fe3 +) solution.

Natural calcium fluoride is mineral fluorite or fluorspar, often shows gray, yellow, green, purple and other colors, sometimes it is colorless, transparent, shiny glass, brittle, and the relative density is 3.01~3.25, it has significant phenomenon of fluorescence. It can be used as the source of fluorine and the material to make hydrofluoric acid system, fluoride; and it can also be used in terms of the manufacture of glass, enamel, glaze. Fluorite is mainly used as a flux in metallurgy, the very pure fluorspar can be used to make specialty lenses. Water when contains (1~1.5) × 10-6 calcium fluoride can prevent dental problems. In addition, it can be used in smelting iron and steel, chemicals, glass, ceramics manufacturing. Pure product can be used for catalyst of dehydration, dehydrogenation. By the effect of soluble calcium salts (calcium carbonate or calcium hydroxide) and sodium fluoride or hydrofluoric acid, ammonium fluoride, calcium fluoride can be obtained.

crystal structure

Calcium fluoride is an ionic crystal with the fluorine anions in a simple cubic array and calcium cations in half of the cubic sites of the structure. The calcium ions can also be thought of as being on an "expanded" fcc lattice with the fluorine ions causing their lattice separation to be 0.39 nm. This representation is shown in the lower diagram. The unit cell has 4 Ca2+ ions and 8 F1- ions.

The material is transparent in the visible spectral region, and shows electronic optical adsorption in the ultra violet and lattice optical absorption in the infrared.

Uses

Industry
Application
Role/benefit
Chemical manufacture
Production of hydrofluoric acid and fluoride
Raw material/source of fluoride
Production of fluorine fine chemicals and synthetic cryolite
Raw material/source of fluoride
Architectural material
Production of glass
Fluxing agent/promote the melting of raw materials
Production of cement
Mineralization agent
Production of ceramic glaze
Fluxes and coloring aids
Metallurgy
Iron and steel smelting, ferroalloy production,etc.
Fluxing agent/reduce the melting point of refractory substances
Medicine
Treatment, control, prevention, & improvement of allergic reactions
Promoting new bone formation
Thermal imaging systems, spectroscopy, telescopes and excimer lasers
Manufacture of optical components, such as windows and lenses
Raw material/broad range of transmission light frequencies; low refractive index; high thermo stability
Others
Production of welding agents
Important components in coatings of welding rods and welding powders
Dehydration and dehydrogenation reaction
Catalyst/accelerate the process of reaction
Manufacture of brake lining
Additive/helps reduce abrasion caused by high heat and friction
 

Production method

The fluorite deposits which have been found in china, are main used the mine using underground mining method, or shallow open-pit mining, and underground deep mining, for ore body most tilt vein, the extending is also large. Mining method is based in shallow hole Shrinkage Method based. Mining process sees "phosphate rock." Beneficiation methods have two types generally, the one is raw ore can become qualified ore concentrate by handling select, the second is hand-selected lean ore and tailings.

Description

Calcium fluoride is colorless crystalline orwhite, powdery substance. Molecular weight=78.08;Specific gravity (H2O:1)=3.18 at 20℃; Boilingpoint=2495℃; Freezing/Melting point=1423℃. HazardIdentification (based on NFPA-704 M Rating System):Health 2, Flammability 0, Reactivity 0. Practically insolublein water.

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

Calcium fluoride is the commercially important source for fluoride compounds as well as hydrogen fluoride. It is transparent from ultraviolet to infrared region. It is used in spectroscopy, thermal imaging systems and excimer lasers; it is also used in the manufacturing of optical components including windows, prisms and lenses. In addition, it is also used in aluminum-metallurgy, brake lining manufacturing industries, and in tooth enamel.

Uses

Naturally occurring CaF2 is the principal source of hydrogenfluoride, a commodity chemicalusedto produce a wide range of materials. Fluoride is liberated from the mineral by the action of concentrated sulfuric acid:
CaF2 (solid)+H2SO4 (liq)→CaSO4 (solid)+2HF (gas)
CaF2 is used as an optical component because of its chemical stability under adverse conditions.Calcium fluoride is commonly used as a window material for both infrared and ultraviolet wavelengths, since it is transparent in these regions (about 0.15 to 9 mm) and exhibits an extremely low-refractive index.
Calcium Fluoride is a water insoluble calcium source for use in oxygen-sensitive applications, such as metal production. In extremely low concentrations (ppm), fluoride compounds are used in health applications. Fluoride compounds also have significant uses in synthetic organic chemistry. They are also commonly used to alloy metal and for optical deposition.
It is also used as a flux for melting and liquid processing of iron, steel and their composites. Its action is based on its similar melting point to iron, on its ability to dissolve oxides and on its ability to wet oxides and metals.

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.

Definition

A mineral form of calcium fluoride (CaF2), used in making some cements and types of glass.

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

Flammability and Explosibility

Non flammable

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.

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.

First aid

If this chemical gets into the eyes, remove anycontact lenses at once and irrigate immediately for atleast 15 min, occasionally lifting upper and lower lids.Seek medical attention immediately. If this chemicalcontacts the skin, remove contaminated clothing and washimmediately with soap and water. Seek medical attentionimmediately. If this chemical has been inhaled, removefrom exposure, begin rescue breathing (using universal precautions, including resuscitation mask) if breathing hasstopped and CPR if heart action has stopped. Transferpromptly to a medical facility. When this chemicalhas been swallowed, get medical attention. A doctoror authorized paramedic may consider administeringaluminum hydroxide gel, if conscious.

storage

Color Code—Green: General storage may be used.Store in tightly closed containers in a cool, well-ventilatedarea away from acids and chemically active metals (such aspotassium, sodium, magnesium, and zinc) because corrosivehydrogen fluoride will be produced.

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

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Calcium fluoride Suppliers

Langfang Ganyao Technology Co., LTD
Tel
0316-2617888 17301291189
Email
bjjhtyhg@163.com
Country
China
ProdList
375
Advantage
58
Wuhan Ji Ye Sheng Chemical Co., Ltd.
Tel
15387013945 15387013945
Email
1806989108@qq.com
Country
China
ProdList
1745
Advantage
58
Wuhan Jiyesheng Chemical Co., Ltd
Tel
13343438917 17357460454
Email
2104604991@qq.com
Country
China
ProdList
1774
Advantage
58
WUHAN GEEYESCHEM CHEMICAL CO., LTD.
Tel
15927657268
Email
1916972268@qq.com
Country
China
ProdList
1756
Advantage
58
J & K SCIENTIFIC LTD.
Tel
010-82848833 400-666-7788
Fax
86-10-82849933
Email
jkinfo@jkchemical.com
Country
China
ProdList
94657
Advantage
76
Alfa Aesar
Tel
400-6106006
Fax
021-67582001/03/05
Email
saleschina@alfa-asia.com
Country
China
ProdList
30123
Advantage
84
Beijing HwrkChemical Technology Co., Ltd
Tel
010-89508211 18501085097
Fax
010-89508210
Email
sales.bj@hwrkchemical.com
Country
China
ProdList
8418
Advantage
55
Energy Chemical
Tel
021-021-58432009 400-005-6266
Fax
021-58436166
Email
sales8178@energy-chemical.com
Country
China
ProdList
44689
Advantage
61
Beijing Ouhe Technology Co., Ltd
Tel
010-82967028 13552068683
Fax
+86-10-82967029
Email
2355560935@qq.com
Country
China
ProdList
12390
Advantage
60
Adamas Reagent, Ltd.
Tel
400-6009262 16621234537
Fax
021-64823266
Email
chenyj@titansci.com
Country
China
ProdList
14103
Advantage
59
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View Lastest Price from Calcium fluoride manufacturers

Yingke New Materials Co., Ltd
Product
Calcium Fluoride 7789-75-5
Price
US $0.00-0.00/BAG
Min. Order
1BAG
Purity
≥99%
Supply Ability
1000 Tons
Release date
2024-10-15
Yingke New Materials Co., Ltd
Product
Calcium Fluoride 7789-75-5
Price
US $0.00-0.00/BAG
Min. Order
1BAG
Purity
≥99%
Supply Ability
1000 Tons
Release date
2024-10-15
Hebei Weibang Biotechnology Co., Ltd
Product
Calcium fluoride 7789-75-5
Price
US $25.00/ASSAYS
Min. Order
100ASSAYS
Purity
99.5%
Supply Ability
100 mt
Release date
2024-11-18

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