... Chloride, Polyacrylamide, Polyaluminium Ferric Chloride ,Polymerization iron sulfate , potassium sulfateand Sodium Tripolyphosphate . And our products mainly export to ... -18205329887 Website: http://www.centralqd.comSpecification and details: ITEMSTANDARDsodium sulphate (Na2SO4), %:99.0 MIN.water insolubles , %:0. ... %<0.00150.008moisture, %<0.100.30whiteness, % min8680 Sodium Sulphate Anhyrous(SSA)99%