Name: Sodium metabisulfite CAS code: 7681-57-4 Formula: Na2S2O5 HS code: 28321000 Appearance: white crystal powder Package: 25kg, 1000kg/bag Application: 1. Used as dressing agent, wastewater treatment agent in industry 2. Used as waste water mordant of printing and dyeing and etc. 3. Used as reducing agent for developing agent and protective agent for fixing solution in photography industry 4. Used as food additives in food industry.
