Chromium(III) Fluoride Hydrate (CrF3•xH2O)-Crystalline

Characteristic

Chromium(III) fluoride is the name for the inorganic compounds with the chemical formula CrF₃ as well as several related hydrates. The compound CrF₃ is a green crystalline solid that is insoluble in common solvents, but the coloured hydrates [Cr(H₂O)₆]F₃ and [Cr(H₂O)₆]F₃•3H₂O are soluble in water. The trihydrate is green, and the hexahydrate is violet. The anhydrous form sublimes at 1100–1200 °C.

Chemical formula: CrF₃•xH₂O

Molar mass : 163.037 g/mol (trihydrate)

                     181.05 g/mol (tetrahydrate)

Appearance: green crystalline solid

Density: 2.2 g/cm3 (trihydrate)

Melting point: 1,100 °C (2,010 °F; 1,370 K) (sublimes)

Solubility in water: sparingly soluble (trihydrate)

Solubility: insoluble in alcohols; soluble in HF, HCl

Magnetic susceptibility (χ): +4370.0•10−6 cm³/mol

 

Application