Rhodium (III) Chloride Trihydrate (RhCl3*xH2O)-Powder

Characteristic

Rhodium(III) chloride refers to inorganic compounds with the formula RhCl₃(H₂O)_n, where n varies from 0 to 3. These are diamagnetic solids featuring octahedral Rh(III) centres. Depending on the value of n, the material is either a dense brown solid or a soluble reddish salt.

Chemical formula：RhCl₃

Molar mass： 209.26 g/mol

Appearance： dark red solid  deliquescent

Density： 5.38 g/cm³, solid

Melting point： ca. 450 °C (842 °F; 723 K)

Boiling point： 717 °C (1,323 °F; 990 K)

Solubility in water：insoluble

Solubility： soluble in hydroxide and cyanide solutions, also soluble in aqua regia  Acidity (pKa) acidic in solution

Magnetic susceptibility (χ)：−-7.5·10⁻⁶ cm³/mol

Crystal structure：Monoclinic, mS16

Application

The soluble trihydrated (n = 3) salt is widely used to prepare compounds used in homogeneous catalysis, notably for the industrial production of acetic acid and hydroformylation.