What is Sodium Sulphite (Na₂SO₃)?

Sodium Sulphite is a white, crystalline, water-soluble inorganic salt with the chemical formula Na₂SO₃. It acts as a powerful reducing agent and is widely used as an oxygen scavenger, preservative, and antioxidant in industrial and commercial applications.

In water treatment, it is used to remove dissolved oxygen, thus preventing corrosion in boilers and pipelines. Sodium sulphite is also used in photographic processing, paper manufacturing, textile bleaching, and food preservation (in controlled applications).

USES AND APPLICATIONS

INDUSTRIES

Sodium Sulphite is widely used in:

• Boiler and cooling water treatment (oxygen removal)

• Pulp and paper industry (chemical pulping process)

• Photography (as a developer and fixer component)

• Textile industry (as a bleaching agent)

• Chemical manufacturing (as an intermediate)

• Food industry (as a preservative – regulated use)

KEY ADVANTAGES

• Efficient oxygen scavenger for corrosion control

• Acts as a reducing agent and antioxidant

• Improves equipment longevity in water systems

• High solubility and easy to dose in solution

• Multi-purpose across various industries