SpecificationofSodiumSulphateAnhydrousItemStandard***钠（Na2SO4）%≥99.399.098.097.095.0水不溶物WaterInsolubleMatters%≤0.050.050.100.20-钙镁(以Mg计)%≤0.100.150.300.400.60氯化物(以CI计)Chloride%≤0.120.350.700.902.0铁(以Fe计)Fe%≤0.0020.0020.0100.040-水分Water%≤0.100.200.501.01.5白度（R457）Whiteness%≥858282--)