1. can be used in ink ,plastic ,coating, paint, and masterbacthes. 2. Superior quality and attract price Product DescriptionPigment Red 31 Ph: 7-8 Density: 1.4-1.6 Oil Absorption: ≤55% Light Fastness: 6 Heat Resistance: 150 Water Resistance: 5 Oil Resistance: 5 Acid Resistance: 5 Alkali Resistance: 5 Alcohol Resistance: 3 Mainly use in Offset ink, Water Base Inks and textile etc.