CHROMIUM CHROMATE.

Chromium chromate has been prepared from chromic chloride solution and silver chromate by double decomposition. The substance forms a brown glassy mass in the dry state, which is soluble in water. A study of the physical properties of its aqueous solution, such as the measurement of equivalent conductivity, freezing point, \(p\)H value, magnetic susceptibility and absorption spectra, as well as of its chemical properties, shows that it is not a simple chromic chromate, Cr2(CrO4)3.3H2O, but contains a complex chromato-chromiate anion and should be represented as \(Cr = [CR_{(H_2O)_3}^{(CrO_4)_3}]\