Quality standard Index items Standard value Test Results Appearance White crystal powder Meets the requirement purity Y99% 99.2% PH value 6.0;a8.0 6.70 Sulphate ¹0.05% 0.03% chloride ¹0.04% 0.04% lead,ug/g ¹2% 1.38% loss on drying ¹0.5% 0.21% Reducing substances ¹0.7% 0.38% 1, Packing: 25kg/bag or 1MT/big bag. 2 ,Storage: Kept in dry and ventilating place, prevent from rain and moisture when storage; if agglomerated, please crush and make it into solution, and its effect will be the same. 3 ,Transportation:non-toxic, harmless, non-inflammable and non-explosive chemicals, it can be transported in truck and train.