The Sodium Sulphate Anhydrous min 99%, White content purity min 88%, Industrial Grade, PH value:6-8 About us : Qingdao Central Chemical Co., ... :0086-18205329887 Website: http://www.centralqd.comSpecification and details: ITEMSTANDARDsodium sulphate (Na2SO4), %:99.0 MIN.water insolubles , %:0.05 MAX ... %<0.00150.008moisture, %<0.100.30whiteness, % min8680 The specification of Sodium Sulphate Anhyrous99%