... formula : Na2So4Molecular weight :142.04Appearance :white crystalline powderCAS NO:7756-82-8EINECS NO:231-820-9purity:99%stability:Stable, but air sensitive ... in cool and dry place, avoid moisture and heat. No breakage, No mixed with oxidant and toxic matter. The storage period is ... matter, avoid rain SSA23 sodium sulfate,anhydrous Na2SO4 99% CAS NO 7756-82-8