A maximum of four coordinated water molecules are present in CrCl3.4H2O complex compound. The compound can be represented as [Cr(H2O)4Cl2]Cl. Thus, the coordination sphere contains 4 water molecules and 2 chloride ions. The ionization sphere contains 1 chloride ion. There may be a complex which contain less than 4 coordinated water molecules such as [Cr(H2O)3Cl3]H2O.