Cadmium fluoride CAS 7790-79-6

Introduction：Basic information about Cadmium fluoride CAS 7790-79-6, including its chemical name, molecular formula, synonyms, physicochemical properties, and safety information, etc.

Cadmium fluoride Basic information

• Product Name: Cadmium fluoride
• Synonyms: Cadmium fluoride (CdF2);Cadmium fluorure;cadmiumfluoride(cdf2);cadmiumfluorure;Cadmium Flouride;Cadmium fluoride 1g [7790-79-6];Cadmium fluoride≥98%;CADMIUM FLUORIDE 99.98%
• CAS: 7790-79-6
• MF: CdF2
• MW: 150.41
• EINECS: 232-222-0
• Product Categories: metal halide;Cadmium Salts;CadmiumMetal and Ceramic Science;Catalysis and Inorganic Chemistry;Chemical Synthesis;Salts
• Mol File: 7790-79-6.mol

Cadmium fluoride Chemical Properties

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)
Crystal Structure	CaF2 type
crystal system	Cube
Merck	14,1619
Solubility Product Constant (Ksp)	pKsp: 2.19
Space group	Fm3m
Lattice constant	a/nm b/nm c/nm α/o β/o γ/o V/nm3 0.539 0.539 0.539 90 90 90 0.1564
Cosmetics Ingredients Functions	NOT REPORTED
CAS DataBase Reference	7790-79-6(CAS DataBase Reference)
NIST Chemistry Reference	Cadmium difluoride(7790-79-6)
EPA Substance Registry System	Cadmium fluoride (CdF2) (7790-79-6)

Safety Information

• 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: TSCA listed
• HazardClass: 6.1
• PackingGroup: II
• HS Code: 28261990

Cadmium fluoride Usage And Synthesis

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.

Definition

Available as pure crystals, 99.89%, d 6.6, mp approx-imately 1110C, soluble in water and acids, insolublein alkalies.

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.

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.

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.]