Magenta crystal, delirious, decomposed when heated to 125.5, melting point 60.Soluble in water, soluble in ethanol, acetone and inorganic acids.Its aqueous solution appears green when heated, and turns reddish purple quickly after cooling.Corrosive and can cause burns.Contact with flammable materials can cause combustion. USES: used for preparing chrome-containing catalyst, used as coal dyeing agent in printing and dyeing industry, used as glass and ceramic glaze color and corrosion inhibitor.