Chemical Composition: Color Index: Pigment Orange 5 C.I.NO.: 12075 Chemical Formula: C16H10N4O5 CAS NO.: 3468-63-1 EU NO.: 222-429-4 Physical Properties: Physical Form : Orange Powder Heat Resistance(o C): 130 Density (g/cm3): 1.6 Specific Surface(㎡/g): 12 PH Value: 4.0-5.0 Oil Absorption(ml/100g): 35 Fastness Properties: Full Color Tint Color Dispersibility: Excellent Excellent Light Fastness: 8 7 Acid Resistance: 5 4 Alkali Resistance: 5 4 Weather Fastness: 5 4 Water Resistance: 5 4 Oil Resistance: 5 4 http://www.honorpigment.com