... ,coil coatings,long effect coatings,engineering plastics, etc Pigment Black 28 (Copper Chromite Black Spinel ) is a Copper Chromite Black Pigment ... coatings based on Silicone. Name: Copper Chromium Black (Pigment Black 28)C.I No.: 77428Chemical Composition: Co-Cr-OAppearance: black powderOil ...