Appearance£ºwhite powder, white pigment, zinc sulfate content is 30%. Formula: zns baso4 Specifications: Terms b301 b311 Total of zinc and baso4 (as zns) 99%min 99%min Total zinc (as zns) 28-30%min 30%min Volatile matters at 105 c 0.3%max 0.3%max Zinc oxide 0.6%max 0.3%max Soluble matters in water 0.4%max 0.3%max Screen residues (63um mesh) 0.1%max 0.1%max Oil absorption (g/100g) 14%max 10%max Color killing (compare with standard) 105%min 105%min Package: plastic weaving bag with polyethylene liner or paper bag, 50kg or 25kg per bag. Application: coating, paint producing, printing ink, plastic, rubber, paper making, enamel etc. 25kg/bag