sodium pyrosulfite
Molecular formula: Na2S2O5
Molecular weight : 190.09
melting point >300,
Solubility : soluble in water ,alcohol, and acetone and in acidic solution,
Na2S2O5+ strong acid →SO2+salt, Na2S2O5+O2→Na2S2O6, Na2S2O5(1500°C)→SO2 and others .
1.Storage and transportation : To prevent damage, moisture, heat metamorphism;To forbid to coexist with acid and xidants, storage for six months.
2.Applications: as preservative, bleach or loosener for food
Main use/ application:
-bleaching agent (such as candy, cakes, dried slices of tender bamboo shoots etc.)
-loosening agent (such as bread, biscuits etc.)
-preservative, disinfector (such as jam and can etc.)
-antioxidant, antistaling agent (such as seafood, fruits, vegetables etc.)