| Identification | More | [Name]
Cadmium fluoride | [CAS]
7790-79-6 | [Synonyms]
cadmium difluoride
CADMIUM FLUORIDE
CADMIUM (II) FLUORIDE
Cadmium fluoride (CdF2)
Cadmium fluorure
cadmiumfluoride(cdf2)
cadmiumfluorure
CdF2
CADMIUM FLUORIDE 99.98%
CADMIUM FLUORIDE (99.98%-CD)
Cadmiumfluoride,Puratronic?,99.99%(metalsbasis)
Cadmiumfluoride,99%
Cadmium fluoride, 99.99+%
cadmium fluoride, puratronic
Cadmium fluoride 99.9%
Cadmium fluoride, Puratronic(R), 99.99% (metals basis)
Cadmium fluoride, 99.9% (metals basis) | [EINECS(EC#)]
232-222-0 | [Molecular Formula]
CdF2 | [MDL Number]
MFCD00010919 | [Molecular Weight]
150.41 | [MOL File]
7790-79-6.mol |
| Chemical Properties | Back Directory | [Definition]
Available as pure crystals, 99.89%, d 6.6, mp approx-
imately 1110C, soluble in water and acids, insoluble
in alkalies.
| [Appearance]
White powder | [Melting point ]
1049 °C | [Boiling point ]
1748 °C | [density ]
6.33 g/mL at 25 °C(lit.)
| [Fp ]
1758°C | [solubility ]
soluble in acid solutions; insoluble in ethanol | [form ]
Powder | [color ]
white | [Specific Gravity]
6.64 | [Water Solubility ]
4.3 g/100 mL (25 ºC) | [Merck ]
14,1619 | [Solubility Product Constant (Ksp)]
pKsp: 2.19 | [CAS DataBase Reference]
7790-79-6(CAS DataBase Reference) | [NIST Chemistry Reference]
Cadmium difluoride(7790-79-6) | [EPA Substance Registry System]
7790-79-6(EPA Substance) |
| Safety Data | Back Directory | [Hazard Codes ]
T+,N,T | [Risk Statements ]
R45:May cause cancer.
R60:May impair fertility.
R61:May cause harm to the unborn child.
R25:Toxic if swallowed.
R26:Very Toxic by inhalation.
R48/23/25:Toxic: danger of serious damage to health by prolonged exposure through inhalation and if swallowed .
R50/53:Very Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment . | [Safety Statements ]
S53:Avoid exposure-obtain special instruction before use .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) .
S60:This material and/or its container must be disposed of as hazardous waste .
S61:Avoid release to the environment. Refer to special instructions safety data sheet . | [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 | [Safety Profile]
Confirmed 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. |
| Hazard Information | Back Directory | [Chemical Properties]
White powder | [Physical properties]
Colorless 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. | [Uses]
Cadmium fluoride is used in phosphors, glass and nuclear reactor controls. It is also used in high-temperature lubricants and to start crystals for lasers. It is used in oxygen-sensitive applications such as the production of metallic alloys and it is also used in limited medical treatment protocols. In addition, it can be used in synthetic organic chemistry. | [Uses]
Manufacture of phosphors, glass; in nuclear reactor controls. | [Preparation]
Cadmium 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. | [Purification Methods]
Crystallise 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.] |
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