Sodium Sulfate 
 Chemical name: sodium sulfate (anhydrous sodium sulfate Na2SO4) 
 Properties: White fine crystal or powder, soluble in water, hygroscopic, odorless, non-toxic. 
 Uses: widely used in vinylon sodium sulfate, sodium silicate, bleaching and dyeing, synthetic detergent, glass, paper, leather, oil and gas pipelines corrosion, metal smelting, surface treatment, filler and other industries. 
 Grade: I Class Grade 
 Packing: 50kg / piece, 25kg / piece, tons of bags, sets tons of bags. 
 Quality Standard: GB/T6009-2003 
 Inspection Report: 
 Test item GB GB6009-2003 
 Class Grade I standard value of conventional products 
 Measured neutral products 
 Measured low-chlorine products 
 Measured 
 Sodium% (Na2SO4) ≥ 99.0 99.20 99.30 99.65 
 Water insoluble% ≤ 0.05 0.02 0.03 0.01 
 Calcium and magnesium total% (Mg) ≤ 0.15 0.02 0.02 0.02 
 Chloride% (Cl) ≤ 0.35 0.19 0.20 0.04 
 Fe% (Fe) ≤ 0.002 0.001 0.001 0.001 
 Moisture% ≤ 0.20 0.02 0.02 0.02 
 Whiteness% ≥ 80 88 85 83 
 PH value is not required not required (1% solution) 7.5 (5% solution) 7.2