... to fade As an important inorganic colorant, iron oxide black is characterized high opacity, strong tinting strength, easy dispersibility ... blackProduct Overview: Formula Fe2O3FeO, with a saturated blue-black ink light-colored, strong, high hiding power, light-fastness is good ... 723/732/757 /779/987/722/792Usage: widely used in colored cement, bricks, paint, paints, building materials, rubber, plastics ...