Chromic Oxide

Product Character Dark green hexagonal crystal or amorphous olive-green powder with metallic sheen.Specific gravity:5.21g per cubic centimeter,melting point:2226±25 centigrade,boiling point:4000 centigrade. Insoluble in water or acid. Soluble in hot alkali metal bromate solution. Extremely stable against light, air, high temperature and corrosive gases. High covering power. Application Mainly used in smelting metallic chromium and chromium carbide, producing ceramic, grinding, polishing, coating, printing ink etc. Executive standard FeatureIndexCr2O3 (%)≥99.2Soluble Chromium (%) ≤0.03Volatile at 105°C (%) ≤0.30Combustion Loss at 1000°C (%) ≤1Water soluble matter (%) ≤0.4Cr6+ (ppm) ≤Will be satisfied with customers’requirementsResidues(45um)(%)1st Grade≤0.012nd Grade0.01-0.13rd Grade0.1-0.5ColorCan be negotiatedTinting strengthCan be negotiatedDispersionShoule be better than negotiated reference pigments.(5.2)PH of Aqueous SuspensionThe discrepancy of PH with negotiated reference pigments should not be more than 1.Oil AbsorptionThe discrepancy should not be more than 15% of negotiated value.Acid and Alkali ResistanceColor’s change should not be more than the one of negotiated reference pigments.(5.2)