CALCIUM (II) FLUORIDE
Calcium fluoride (CaF2)
calcium fluoride anhydrous
Calcium fluoride 98%
|Chemical Properties||Back Directory|
A pure naturally occurring form of calcium fluoride.
Calcium fluoride is colorless crystalline
or white, powdery substance.
3.18 g/mL at 25 °C(lit.)
|[refractive index ]|
Stable. Incompatible with acids.
|[Water Solubility ]|
|[CAS DataBase Reference]|
7789-75-5(CAS DataBase Reference)
|[NIST Chemistry Reference]|
|[EPA Substance Registry System]|
|Safety Data||Back Directory|
|[Hazard Codes ]|
|[Risk Statements ]|
R36/37/38:Irritating to eyes, respiratory system and skin .
|[Safety Statements ]|
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S37/39:Wear suitable gloves and eye/face protection .
S36:Wear suitable protective clothing .
|[WGK Germany ]|
|[Hazard Note ]|
|[HS Code ]|
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-.
|[Hazardous Substances Data]|
7789-75-5(Hazardous Substances Data)
|Hazard Information||Back Directory|
Odorless gray powder or granules. Sinks in water.
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.
Little acute toxicity
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.
If this chemical gets into the eyes, remove any
contact lenses at once and irrigate immediately for at least
15 minutes, occasionally lifting upper and lower lids. Seek
medical attention immediately. If this chemical contacts the
skin, remove contaminated clothing and wash immediately
with soap and water. Seek medical attention immediately.
If this chemical has been inhaled, remove from exposure,
begin rescue breathing (using universal precautions, including resuscitation mask) if breathing has stopped and CPR ifheart action has stopped. Transfer promptly to a medical
facility. When this chemical has been swallowed, get medical attention. A doctor or authorized paramedic may consider administering aluminum hydroxide gel, if conscious
Calcium fluoride is not specifically covered by
DOT in its Performance-Oriented Packaging Standards.
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
|Questions And Answer||Back Directory|
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.
Production of hydrofluoric acid and fluoride
Raw material/source of fluoride
Production of fluorine fine chemicals and synthetic cryolite
Raw material/source of fluoride
Production of glass
Fluxing agent/promote the melting of raw materials
Production of cement
Production of ceramic glaze
Fluxes and coloring aids
Iron and steel smelting, ferroalloy production,etc.
Fluxing agent/reduce the melting point of refractory substances
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
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
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.
Mainchem Co., Ltd.