... is orange. Good resistance to light, can reach 5 ~. Resistance to 150 degrees c. Water permeability, oil perjmeability for grade 1. ... pigment. Excellent resistance to light and heat resistance, water resistance, alkali, acid solvent. Can be used in all kinds of thermoplastic and ... 783kg sodium dichromate, 378kg sulfuric acid, 90kg vitriolic 2000L and water, can get about 2500kg chrome yellow pigment.