What Is Sodium Metabisulfite and Its Uses?
Sodium metabisulfite, one of the sulfites that can be utilized as a preservative, antioxidant, and bleaching agent in food. It is a decreasing agent that is commonly utilized for the preservation of fresh & dried fruits, veggies, and wine. How is Sodium Metabisulfite made? Sodium metabisulfite can be made from the reaction between sulfur dioxide with sodium carbonate. The following is the response equation: SO2 + Na2SO3 → NA2S2O5 . The manufacturing procedure is: Reaction between sodium carbonate (Na2CO3) and sodium bisulfite (NaHSO3) service to form the combined solution of sodium bisulfite and sodium sulfite (Na2SO3). Response equation: Na2CO3 +2 NaHSO3 = Na2SO3+ H2O+ CO2. Add excess sulfur dioxide (SO2) to the above solution to transform sodium sulfite to sodium bisulfite and additionally obtain the liquified sulfur dioxide. Reaction equation: Na2SO3+ H2O+ SO2= 2NaHSO3. Transform the liquified sulfur dioxide to sodium bisulfite by adding an alkali active ingredient, e, g, sodiu