Sodium Hydrogen Sulphite

ALTERNATIVE NAMES
SBS, Sodium Bisulfite, Sulfurous Acid Monosodium Salt.
TECHNICAL SPECIFICATIONS
CAS
7631-90-5
EC
231-548-0
Food Code
-

Sodium Hydrogen Sulphite, commonly referred to as Sodium Bisulfite, is an essential inorganic salt typically supplied as a 38-40% Aqueous Solution or high-purity powder. It is a powerful reducing agent used to neutralize residual chlorine and remove dissolved oxygen in high-pressure industrial systems.

In industrial processing, it serves as a critical dechlorinating agent, protecting sensitive downstream membranes and preventing oxidative damage. Its reductive properties are also leveraged in the textile industry for bleaching and the removal of excess dyes after processing.

The chemical exhibits consistent purity and stability, making it a reliable additive for fermentation processes and food-grade preservation when specified. Its ability to act as a bisulfite adduct former is vital for the purification and isolation of aldehydes and ketones in specialty chemical manufacturing.

Sodium Hydrogen Sulphite

  • Water Treatment: Rapidly neutralizes residual chlorine in municipal water and industrial effluent before discharge to protect aquatic life.
  • Pulp and Paper: Utilized in the bleaching process to achieve desired brightness and in the removal of lignins during paper production.
  • Textile Industry: Acts as an antichlor after bleaching with chlorine-based agents and as a reducing agent in vat dyeing.

Classified as Acute Toxicity (Oral) and Skin/Eye Irritant. Releases Sulfur Dioxide Gas if mixed with acids; use in Well-Ventilated Areas with appropriate Respirators.

25 kg Bags (powder), 250 kg Drums, and 1250 kg IBC Tanks (liquid solution).

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