Chemical Composition: Color Index: Pigment Violet 23 C.I.NO.: 51319 Chemical Formula: C34H22Cl2N4O2 CAS NO.: 6358-30-1 EU NO.: 228-767-9 Physical Properties: Physical Form : Violet Powder Heat Resistance(o C): 250 Density (g/cm3): 1.5 Specific Surface(㎡/g): 67 PH Value: 5.0-6.0 Oil Absorption(ml/100g): 78 Fastness Properties: Full Color Tint Color Dispersibility: Excellent Excellent Light Fastness: 7-8 7~8 Migration Resistance PVC 4 http://www.honorpigment.com