Na2SO4 min 99%,Ca+Mg Mg max 0.15%,Fe max 0.002%,Moisture, Max 0.2% Characteristics:white powerMolecular Formular: Na2SO4Specification:specificationItem(Dry Sample)IndexNa2SO4≥99%Ca+MgMg≤0.15%Fe≤0.002%Moisture≤0.2%Water Insolubles≤0.05%White Degree≥80%PH Value6-8 Used:used dyemondant laxtive ,raw materrials for making of glass ,paper-making ,detergent ,dyestuff fillings ,plastic industrial ...