Sodium Bisulphite

High-Purity Sodium Bisulphite for Water Treatment, Textile Processing & Industrial Applications

₹72.00

Sodium Bisulphite (NaHSO₃) is also known as Sodium Hydrogen Sulfite is a white, crystalline, inorganic salt with a slight sulfurous odor is a white, crystalline inorganic compound with a slight sulfurous odor, commonly used as a reducing agent, preservative and antioxidant. It is highly soluble in water, creating a slightly acidic solution. It is widely applied in food preservation, water treatment (dechlorination) and industrial processes like papermaking and photography. It prevents food browning, disinfects, removes excess chlorine from water and acts as a stabilizer in pharmaceuticals.

Applications of Sodium Bisulphite:

  • Food Preservation: It is commonly used as a food preservative and antioxidant to prevent enzymatic browning in dried fruits, potatoes and seafood. It also prevents oxidation and microbial growth in wine, preserving flavor.

  • Water Treatment: It acts as a deoxygenating agent in water treatment, removing residual chlorine and dissolved oxygen from industrial water systems and municipal water supplies.

  • Pulp and Paper Industry: It is utilized in the paper-making process for pulping wood and as a bleaching agent.

  • Leather Processing: It is used in the leather tanning industry for hair removal and de-liming hides.

  • Chemical Manufacturing: It is used as a reducing agent in chemical synthesis and to purify aldehydes and ketones by forming crystalline bisulfite addition compounds.

  • Textile and Dyeing: It is used as a bleaching agent and for stripping colors in the textile industry.

  • Mining: Sodium Bisulphite is used in the extraction of certain metals and for cleaning equipment.

  • Pharmaceuticals: Sodium Bisulphite is used as an antioxidant to maintain the stability of various pharmaceutical formulations.

Product Specifications – Sodium Bisulphite:

Parameter

Specification

Product Name

Sodium Bisulphite

Chemical Name

Sodium Hydrogen Sulfite

Chemical Formula

NaHSO₃

CAS Number

7631-90-5

Molecular Weight

104.06 g/mol

Appearance

White to slightly yellow crystalline powder

Odour

Characteristic sulfur dioxide odour

Purity

≥ 97.0%

Assay (NaHSO₃)

≥ 97.0%

Sulfur Dioxide (SO₂)

Approximately 61–63%

Sodium Sulfite (Na₂SO₃)

≤ 2.0%

Sodium Sulfate (Na₂SO₄)

≤ 1.0%

Iron (Fe)

≤ 10 ppm

Heavy Metals

≤ 10 ppm

Water-Insoluble Matter

≤ 0.05%

pH (5% Solution)

Approximately 4.0–5.5

Moisture

≤ 1.0%

Solubility in Water

Highly soluble

Packaging

50 Kg HDPE/PP bags 

Storage

Store in a cool, dry and well-ventilated area; keep tightly sealed and protect from moisture, heat and oxidizing agents

HSN/SAC Code

28321010

MOQ: 50 Kg.

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