Oil & Gas Exploration and Production Chemicals
Sodium Bisulfite
Chemical Description
Anhydrous Sodium bisulfite (NaSO3) is a white solid with a slightly sulfurous odor. It may be generated by bubbling sulfur dioxide in a solution of sodium carbonate in water. NaSO3 is typically used in aqueous solutions of varying concentrations.
Common Industrial Uses of Sodium Bisulfite
Due to its ability to react with dissolved oxygen, NaSO3 is commonly used as a reducing agent by use of the following chemical process:
2 NaHSO3 + O2 → 2 NaHSO4
For this reason, NaSO3 is often used in large piping systems to prevent corrosion.
NaSO3 is sometimes confused with sodium bisulfate which is commonly used to control pH in swimming pools. NaSO3 is widely used in water treatment plants following chlorine disinfection. Its use neutralizes the residual chlorine.
NaSO3 is also widely used in the processes which allow DNA sequencing.
Chemical Formula
- NaSO3
CAS No.
- 7631-90-5
Minimum Order Quantity
20 ton (40,000 pound) minimum order.
Note: CCUSA is a wholesale industrial and commercial bulk chemical supplier.
Safety Considerations
NaSO3 is corrosive and can cause damage to soft body tissues such as skin and eyes. Therefore, goggles, face shield, and protective apron, gloves and shoes should be worn at all time when handling NaSO3. A safety shower should be made available to anyone who is handling NaSO3 in aqueous form.
Common Names / Also Known As
- Sodium hydrogen sulfite
- E222 (as a food additive)
