Sodium nitrite

Sodium nitrite

"Nitrous acid, sodium salSodium salt of nitrous acid; Nitrosylic acid, sodium salt; E250 (Food additive code)

CAS 7632-00-0

Chemical Formula NaNO₂

Molecular Weight 69.00 g/mol

Sodium nitrite is a pale yellow to white crystalline inorganic compound widely recognized for its role as a corrosion inhibitor, preservative, and industrial chemical. It functions as a strong oxidizing and nitrosating agent, making it valuable in chemical synthesis, water treatment, metal finishing, and food preservation. In the meat processing industry, Sodium nitrite is essential for curing and preserving color and flavor. It is also used in the manufacture of dyes, pharmaceuticals, and rubber chemicals. Additionally, Sodium nitrite is utilized in heat transfer fluids and antifreeze formulations.

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Industrial Uses

1. Food & Healthcare Ingredients

  • Preservative in Meat Products:  Sodium nitrite is commonly used to cure meats such as sausages, bacon, and ham. It inhibits the growth of Clostridium botulinum, thereby preventing botulism.
  • Color Fixative and Flavor Enhancer:  It helps maintain the appealing pink/red color of processed meats and enhances their flavor profile.

2. Pharmaceuticals

  • Antidote in Cyanide Poisoning: Sodium nitrite is administered intravenously as part of cyanide antidote kits. It induces methemoglobinemia, which helps neutralize cyanide ions.
  • Intermediate in Drug Synthesis: It is used in the production of various active pharmaceutical ingredients (APIs) as a nitrating agent.

3. Performance Chemicals

  • Diazotization Reactions:  Widely used in organic synthesis, especially in the production of azo dyes through diazotization of aromatic amines.
  • Corrosion Inhibitor in Cooling Systems:  Sodium nitrite is added to industrial water systems to prevent rusting and corrosion in pipelines and machinery.
  • Analytical Reagent: Employed in laboratories for various qualitative and quantitative chemical analyses, especially for detecting amines and phenols.
  • Synthesis of Nitroso Compounds: Used in research and academia for creating nitroso derivatives in chemical experiments

4. Fabric Solutions

  • Azo Dye Manufacture: Used as a key reagent in the synthesis of azo dyes for fabrics, providing vibrant and long-lasting colors.
  • Bleaching Agent: Acts as a mild oxidizer for textile bleaching processes.

5. Metal Treatment

  • Heat Treatment of Metals: Sodium nitrite is used in metal finishing and for carburizing baths during the heat treatment of steel.
  • Anti-scaling Agent: It prevents scaling and corrosion in metal components during manufacturing and processing.

Specifications

Assay ≥ 97% (typically 98–99%)
Appearance White to slightly yellow crystalline powder
Odor Odorless
Boiling Point Decomposes before boiling
Melting Point 271 °C
Density 2.168 g/cm³ (at 20 °C)
Solubility 84.8 g/100 mL in water at 20 °C (very soluble)
Viscosity Not applicable (solid at room temp)
Flash Point Not applicable (inorganic salt, non-flammable)

Hazard Symbols

Oxidisers
Acute Toxicity
Irritants/Sensitisers/Other Hazards
Environmental Hazard

FAQs

1. What is the current price of Sodium nitrite in India?
The price of Sodium nitrite can vary based on factors such as purity, quantity, etc. For the most accurate and competitive pricing, please contact us at +91.6301 00 6301 directly for a customized quote tailored to your needs.

2. Where can I buy Sodium nitrite in India?
You can purchase Sodium nitrite from MULTICHEM, a leading exporter with a reputation for quality and reliability. We provide convenient options for bulk orders and direct shipments global markets. For more details on how to place an order, please visit our website or contact our sales team.

3. What is the minimum order quantity (MOQ) for Sodium nitrite?
Our minimum order quantity (MOQ) for Sodium nitrite is designed to cater to both small-scale and large-scale needs. The MOQ depends on the packing size of the product which could range from 25 kg to 200 kg.

4. How can I ensure the quality of Sodium nitrite supplied by Multichem?
We adhere to stringent quality control processes to ensure that our products meet the highest standards of purity and effectiveness. They undergo rigorous testing and quality checks to guarantee that they comply with industry specifications. We provide a Certificate of Analysis (CoA) with every shipment to ensure transparency and quality assurance.