Quality Index Product Name Sodium Sulfate Sodium Sulfate (By Na2SO4) %> =99.00 Calcium Magnesium (By Mg) Content %< =0.05 Chloride (By Cl) Content %< =0.1 Iron (By Fe) Content %< =0.002 The Content of Substance Insoluble in Water %< =0.05 Moisture Content %< =0.02 White Content Purity >=88 PH: 6-8