- Synonyms: Sulfuric acid sodium saltr- Na2SO4r- M = 142,04 g/molr- CAS [7757-82-6]r- EINECS-No.: 231-820-9r- Solub. in water: (20 ºC): 160 g/lr- Melting point: 888 ºCr- Boiling point: > 890 ºC (decomposes)r- Tariff number: 2833 11 00 00r- Applications: analytical chemistry, organic solvents drying.rrSPECIFICATIONSrassay (on dried sample): 98,5 - 101,0 %rIdentification sulfates: passes testrIdentification sodium: passes testrappearance of solution: clear and colourlessracidity or alkalinity: passes testrchlorides (Cl): max. 450 ppmrcalcium (Ca): max. 450 ppmriron (Fe): max. 90 ppmrmagnesium (Mg): max. 200 ppmrloss on drying (130 ºC): max. 0,5 % r