Sodium Bisulphite (Sodium Hydrogen Sulfite)

Product Description

Sodium Bisulphite (NaHSO₃), also known as Sodium Hydrogen Sulfite, is a white crystalline or granular powder with a characteristic sulfurous odor. It is a reducing agent commonly used in analytical chemistry, food preservation, and industrial processes.

Sodium Bisulphite is produced by bubbling sulfur dioxide through a sodium carbonate or sodium hydroxide solution. It is widely employed for chemical reduction, dechlorination, and preservation due to its ability to release sulfur dioxide (SO₂) in aqueous solutions. In laboratories, it is frequently used in quantitative analysis and organic synthesis as a mild reducing agent.

Key Features

• Chemical Name: Sodium Hydrogen Sulfite
  • Chemical Formula: NaHSO₃
  • CAS Number: 7631-90-5
  • Molecular Weight: 104.06 g/mol
  • Appearance: White crystalline or granular powder
  • Purity: ≥98% (Analytical Reagent Grade)
  • Odor: Slight sulfur dioxide (SO₂) odor
  • Solubility: Freely soluble in water; decomposes in acid to release SO₂ gas
  • pH (1% solution): 4.0–5.0 (acidic)
  • Stability: Stable under dry conditions; decomposes on exposure to air and moisture

Applications

Laboratory & Research

• Used as a reducing agent in chemical and analytical reactions.
  • Applied in organic synthesis, particularly for aldehyde and ketone protection.
  • Serves as a preservative for chemical and biological samples.
  • Utilized in dechlorination of laboratory water and wastewater treatment.

Industrial Uses

• Widely used as a food preservative (E222) to prevent microbial spoilage and oxidation.
  • Employed in textile, leather, and paper industries for bleaching and antioxidant functions.
  • Used in photography and chemical manufacturing as a reducing and stabilizing agent.
  • Applied in water treatment plants to remove excess chlorine and heavy metals.

Safety & Handling

• Hazard: Irritant; may cause eye, skin, and respiratory irritation. Decomposes to release sulfur dioxide gas.
  • Precautions: Use gloves, goggles, and mask while handling. Avoid inhalation of dust or vapors.
  • Storage: Keep in a cool, dry, and well-ventilated area, in tightly sealed containers away from heat, air, and acids.
  • Disposal: Dispose of according to local hazardous waste management regulations.

Why Choose Sodium Bisulphite from M/S Bright Scientific Co.?

• High-Purity Analytical Reagent Grade for accurate and reliable laboratory results.
  • Tested and Verified Quality suitable for industrial, research, and food applications.
  • Safe Packaging & Nationwide Delivery ensuring product integrity.
  • Trusted Supplier to academic institutions, pharmaceutical companies, and industries.
  • Competitive Prices with bulk and institutional discounts available.

Price in Bangladesh

Available in 250 g, 500 g, 1 kg, and bulk quantities at competitive prices.
Bulk discounts offered for universities, research labs, and industrial users.

Contact Information

M/S Bright Scientific Co.
📞 Phone: 01711285976