The product is suitable for the industries of coatings, inks, plastic products, and printing paste. Hualan 08 (P.B.27) IRON BLUE LA09-08 Physical Data: pH Value pH 23.5; mI/100mg Oil Absorption ≤48; Heat Resistance 150; Fastness Light Resistance 4-5; Water Resistance 5; Linseed Oil Resistance 5; Acid Resistance 4; Alkali Resistance 1