Used as catalyst and chrome catalyst, mordant for printing and dyeing wool, cotton, silk and artificial fiber, chromium reagent for trivalent chromium electroplating, Used for making chromium salt, chrome plating and mordant, also used as decomposition reagent, the solution can absorb oxygen. printing and dyeing industry, as mothproofing agent for wool, halide catalyst, marble hardening and coloring agent Used as a mordant and corrosion inhibitor for the production of chromium-containing catalysts, glass, ceramic glazes, printing and dyeing fabrics.