The product is suitable for the industries of coatings, inks, plastic products, and printing paste. Fast Yellow G (PY.1) SUNFAST YELLOW G Physical Data: pH Value pH 6-7; mI/100mg Oil Absorption ≤45; Heat Resistance 160; Fastness Light Resistance 6-7; Water Resistance 4-5; Linseed Oil Resistance 4; Acid Resistance 5; Alkali Resistance 4-5