ChemicalBook > Product Catalog > Inorganic chemistry > Inorganic salts > Metal halide and Halogen salt > Metal fluoride and salt > Cadmium fluoride
Cadmium fluoride
- Product Name:Cadmium fluoride
- CAS:7790-79-6
- MF:CdF2
- MW:150.41
- EINECS:232-222-0
- Mol File:7790-79-6.mol
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Cadmium fluoride Chemical Properties
- Melting point:1049 °C
- Boiling point:1748 °C
- Density 6.33 g/mL at 25 °C(lit.)
- Flash point:1758°C
- form Powder
- color white
- Specific Gravity6.64
- Water Solubility 4.3 g/100 mL (25 ºC)
- Merck 14,1619
- Solubility Product Constant (Ksp)pKsp: 2.19
- CAS DataBase Reference7790-79-6(CAS DataBase Reference)
- NIST Chemistry ReferenceCadmium difluoride(7790-79-6)
- EPA Substance Registry SystemCadmium fluoride (CdF2) (7790-79-6)
- Hazard Codes T+,N,T
- Risk Statements 45-46-60-61-25-26-48/23/25-50/53
- Safety Statements 53-45-60-61
- RIDADR UN 2570 6.1/PG 2
- WGK Germany 3
- RTECS EV0700000
- Hazard Note Toxic
- TSCA Yes
- HazardClass 6.1
- PackingGroup II
- HS Code 28261990
- Language:EnglishProvider:ACROS
- Language:EnglishProvider:SigmaAldrich
- Language:EnglishProvider:ALFA
Cadmium fluoride Usage And Synthesis
- Chemical PropertiesWhite powder
- Physical propertiesColorless cubic crystal; density 6.33 g/cm3; melts at 1,110°C; vaporizes at 1,748°C; vapor pressure 5 torr at 1,231°C; moderately soluble in water, 4.35 g/100mL at 25°C; soluble in hydrofluoric and other mineral acids; practically insoluble in alcohol and liquid ammonia.
- UsesManufacture of phosphors, glass; in nuclear reactor controls.
- DefinitionAvailable as pure crystals, 99.89%, d 6.6, mp approx- imately 1110C, soluble in water and acids, insoluble in alkalies.
- PreparationCadmium fluoride is prepared by the reaction of gaseous fluorine or hydrogen fluoride with cadmium metal or its salt, such as chloride, oxide or sulfide:
Cd + F2 → CdF2
Cd + 2HF → CdF2 + H2
CdO + 2HF → CdF2 + H2O
It also may be obtained by dissolving cadmium carbonate in 40% hydrofluoric acid solution, evaporating the solution and drying in vacuum at 150°C:
CdCO3 + 2HF → CdF2 + H2O + CO2
It also may be prepared by mixing cadmium chloride and ammonium fluoride solutions, followed by crystallization. - Safety ProfileConfirmed human carcinogen. Poison by subcutaneous route. Violent reaction with K. When heated to decomposition it emits very toxic fumes of Cd and F-. See also FLUORIDES and CADMIUM COMPOUNDS.
- Purification MethodsCrystallise it by dissolving it in hot water (25mL/g at room temperature) at 60o, filtering, then cooling. [Kwasnik in Handbook of Preparative Inorganic Chemistry (Ed. Brauer) Academic Press Vol I p 243 1963.]
- Chromium(III) fluoride tetrahydrate CALCIUM SULFIDE COBALT THIOCYANATE CADMIUM HYDROXIDE Beryllium Potassium chromate Hydrogen fluoride Cadmium fluoride Potassium fluoride Sulfur hexafluoride sodium fluoride Boron trifluoride Ammonium fluoride FLUORIDE STANDARD CADMIUM Sodium fluoride Aluminum fluoride Ammonium hydrogen difluoride
Cadmium fluoride SupplierMore
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