Sourcing Sodium Sulfite (Anhydrous)? ChemicalDekho connects you with specialized manufacturers of sulfur chemicals. Access high-purity reducing agents for boiler water treatment and food preservation.
Sodium Sulfite (CAS 7757-83-7) is a powerful reducing agent. In industrial water treatment, it is the primary oxygen scavenger used in low to medium pressure boilers to prevent pitting corrosion. In the food industry (E221), it prevents browning of dried fruits and preserves the freshness of meat and seafood. It is also a critical component in photographic developers.
Verified listings offer Anhydrous grade material with guaranteed SO2 content and high solubility for dosing systems.
Oxygen scavenger for boilers
Preservative (E221) & Antioxidant
Developing agent component
Antichlor & Bleaching agent
Semi-chemical pulping
Sulphonating agent
Oxygen control in injection water
Dechlorination of wastewater
Leading petrochemical producers
Ready stock at Ports
Compliant transport
Harmful if swallowed. Causes skin and eye irritation. Contact with acids liberates toxic Sulfur Dioxide gas. Some people have severe sulfite allergies.
Dissolved oxygen in water causes rapid corrosion (pitting) in boiler tubes. Sodium Sulfite reacts with oxygen to form Sodium Sulfate, removing the threat to the metal.
No. Sodium Sulfite (Na2SO3) is a reducing agent. Sodium Sulfate (Na2SO4) is a stable salt used as a filler. Sulfite eventually turns into Sulfate after reacting with oxygen.
It has a faint sulfurous odor, which becomes very strong and toxic (SO2 gas) if mixed with any acid.
Sodium Sulfite slowly turns into Sodium Sulfate in the bag if exposed to air. A high assay (96%+) indicates fresh, active material.