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CAS NO.7789-75-5
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| Calcium fluoride Basic information |
| Product Name: | Calcium fluoride |
| Synonyms: | FLUORITE;FLUORSPAR;FLUORSPARMEAL;Calcium difluoride;CALCIUM FLUORIDE;CALCIUM (II) FLUORIDE;NATURAL FLUOROSPAR;Acid-spar |
| CAS: | 7789-75-5 |
| MF: | CaF2 |
| MW: | 78.07 |
| EINECS: | 232-188-7 |
| Product Categories: | Inorganics;metal halide |
| Mol File: | 7789-75-5.mol |
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| Calcium fluoride Chemical Properties |
| mp | 1402 °C |
| bp | 2500 °C(lit.) |
| density | 3.18 g/mL at 25 °C(lit.) |
| refractive index | 1.434 |
| Fp | 2500°C |
| storage temp. | -20°C |
| form | rod |
| color | white |
| Water Solubility | INSOLUBLE |
| Sensitive | Hygroscopic |
| Merck | 14,1667 |
| Stability: | Stable. Incompatible with acids. |
| CAS DataBase Reference | 7789-75-5(CAS DataBase Reference) |
| NIST Chemistry Reference | Calcium fluoride(7789-75-5) |
| EPA Substance Registry System | Calcium fluoride (CaF2)(7789-75-5) |
| Safety Information |
| 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 |
| HS Code | 28261900 |
| Hazardous Substances Data | 7789-75-5(Hazardous Substances Data) |
| MSDS Information |
| Provider | Language |
|---|---|
| Calcium fluoride | English |
| SigmaAldrich | English |
| ACROS | English |
| ALFA | English |
| Calcium fluoride Usage And Synthesis |
| 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. |
| Solubility in water (g / 100ml) | Grams dissolve in per 100 ml of water:8.575×10-3 / 30 ℃ |
| Application | Uses: It is used as the flux of metallurgical, and catalysts of dehydration and dehydrogenation, it can also be used in electronics, instrumentation industry Uses: It is used to make hydrofluoric acid and fluoride, and it can also be used for enamel, ceramic and metallurgical flux. Uses: It is widely used in chemical industry, metallurgy, glass, enamel and cement and other fields. Uses: It is used to make optical glass, optical fiber, enamel, medicine, and it can also be used for catalyst of dehydration and dehydrogenation. Uses: Fluorite is the main mineral raw materials in the preparation of fluorine and hydrofluoric acid in chemical industry, and it is also the basic raw material for the production of Freon, fluorine polymers, fluorine-containing fine chemicals, synthetic cryolite. It is also used in metallurgy, cement, glass and ceramics sectors large amount. The colorless transparent fluorite crystals can be used as bulk optical fluorite and fluorite process. Uses: It is widely used in chemical industry, metallurgy, glass, enamel and cement and other fields. |
| Application |
It is used as the flux of metallurgical, and catalysts of dehydration and dehydrogenation, it can also be used in electronics, instrumentation industry. It is used to make hydrofluoric acid and fluoride, and it can also be used for enamel, ceramic and metallurgical flux. It is widely used in chemical industry, metallurgy, glass, enamel and cement and other fields. It is used to make optical glass, optical fiber, enamel, medicine, and it can also be used for catalyst of dehydration and dehydrogenation. Fluorite is the main mineral raw materials in the preparation of fluorine and hydrofluoric acid in chemical industry, and it is also the basic raw material for the production of Freon, fluorine polymers, fluorine-containing fine chemicals, synthetic cryolite. It is also used in metallurgy, cement, glass and ceramics sectors large amount. The colorless transparent fluorite crystals can be used as bulk optical fluorite and fluorite process. The above information is edited by the chemicalbook of Wang Xiaodong. |
| 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. |
| Category | Toxic substances. |
| Toxicity grading | Mid toxicity. |
| Acute toxicity | Oral - rat LD50: 4250 mg / kg; intraperitoneal - Mouse LD50: 2638 mg / kg. |
| Flammability hazard properties | Thermal decomposition of toxic exhaust fumes of fluoride. |
| Storage characteristics | Treasury ventilation low-temperature drying. |
| Extinguishing media | Water, carbon dioxide, foam, powder. |
| Professional standards | TWA 2.5 mg (fluorine) / cubic meter. |
| Chemical Properties | White Powder |
| 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. |
| Health Hazard | Little acute toxicity |
| Calcium fluoride Preparation Products And Raw materials |