The Sodium Sulphate Anhydrous min 99%, White content purity min 88%, Industrial Grade, ... Chloride ,Polymerization iron sulfate , potassium sulfateand Sodium Tripolyphosphate . And our products mainly export to ... ://www.centralqd.comSpecification and details: ITEMSTANDARDsodium sulphate (Na2SO4), %:99.0 MIN.water insolubles , %:0.05 MAX ... %<0.100.30whiteness, % min8680 Sodium Sulphate Anhyrous(SSA)99%