Chemical Composition: Color Index: Pigment Red 57:1 C.I.NO.: 15850:1 Chemical Formula: C18H12N2O6SCa CAS NO.: 5281/4/9 EU NO.: 226-109-5 Physical Properties: Physical Form : Red Powder Heat Resistance(o C): 240 Density (g/cm3): 1.8 Specific Surface(㎡/g): 50 PH Value: 6.5-7.5 Oil Absorption(ml/100g): 50 Fastness Properties: Full Color Tint Color Dispersibility: Excellent Excellent Light Fastness: 5 4-5 Migration Resistance PVC 4 http://www.honorpigment.com