LITHOPONE 28-30% Formula：ZnS •BaSO4 Description：White powder Specification：Purity 28—30% Analysis： Total Zinc content（as ZnS） 28—30% Tinting strength 100% min Oil absorption 14% max Covering power，g/㎡ 100 max Soluble salt in water 0.4% max Moisture 0.3% max PH value 6.8—8.0 ZnO dissolve in ethane acid 0.7 max Fineness passing through 320 mesh （diameter 0.044mm） with residue 0.3%max Packing： In 25kg P.P Bag Uses： Mainly used for paint industry to blend all kinds of light colored paints，and also can be used for rubber，printing ink，varnished cloth，oil cloth，paper making，enamel and tan，etc.