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ASA IMPEX is manufacturing and providing Sodium Bisulfite in various grades such as food grade and commercial grade. It has CAS Number 7631-90-5 and its Formula Weight is 104.06 g/mol. Also known as sodium hydrogen sulfite, this is a chemical compound which is used for dehydrating, effluent treatment plants, leather tanning and water treatment. We formulate this compound in our factory in Delhi and its chemical formula is NaHSO3. The sulfur dioxide is bubbled with the solution of sodium carbonate in the presence of water to produce this chemical compound. Its application areas are paper & pulp, chemical processing, food & beverage, and power generation.