Anhydrous sodium sulfate 99.6% min Molecular weight: 142.04 CAS No .: 7757-82-6 EINECS No: 231-820-9 Chemical Name: Anhydrous sodium sulfate ... , paper making, tanning, metal smelting, surface treatment and filler industries. Grade: Class I first quality Packing: 50kg/piece, 25kg/piece, in ... 2PH Value (50g/L,25°C)5.0-8.07.2-3Burning vector%max0.20.04-4Water insoluble matter% max0.0050 ...