Sodium nitrite

Sodium nitrite is an inorganic compound with the chemical formula NNaO2 and molecular weight of 68.995 g/mol. It serves as both an oxidizing agent and preservative in various industrial applications. This white to slightly yellowish crystalline powder is highly soluble in water and classified as hazardous with oxidizing properties (Ox. Sol. 3), acute toxicity (Acute Tox. 3), and aquatic toxicity (Aquatic Acute 1), requiring careful handling protocols.

Sodium nitrite appears as white to pale yellow crystalline powder or granules that are highly soluble in water. It has a molecular formula of NNaO2 with a molecular weight of 68.995 g/mol. The compound is odorless and has a slightly salty taste. It exhibits strong oxidizing properties and is hygroscopic, meaning it readily absorbs moisture from air. These properties make it reactive with organic materials and reducing agents.

Sodium nitrite serves multiple industrial purposes, primarily as a food preservative in meat products where it prevents bacterial growth and maintains color. It functions as a corrosion inhibitor in industrial cooling systems and concrete applications. The compound is also used in metal treatment processes, as an intermediate in dye manufacturing, and in pharmaceutical synthesis. Its oxidizing properties make it valuable in various chemical manufacturing processes.

Sodium nitrite requires strict safety measures due to its toxicity and oxidizing properties. Wear appropriate PPE including chemical-resistant gloves, safety goggles, and protective clothing. Ensure adequate ventilation and avoid generating dust. Keep away from heat sources, combustible materials, and reducing agents. Wash hands thoroughly after handling and avoid eating, drinking, or smoking in work areas. Training on emergency procedures is essential for all handlers.

Sodium nitrite must be stored in a cool, dry, well-ventilated area away from heat sources and direct sunlight. Keep containers tightly closed and separate from combustible materials, reducing agents, acids, and food products. Storage areas should be equipped with appropriate fire suppression systems. Maintain temperature below 25°C and relative humidity below 60%. Regular inspection of containers for damage or contamination is recommended.

Sodium nitrite exposure requires immediate first aid measures. For skin contact, remove contaminated clothing and rinse affected area with plenty of water for at least 15 minutes. If inhaled, move person to fresh air immediately. For eye contact, flush with clean water for 15 minutes while holding eyelids open. If ingested, do not induce vomiting - rinse mouth and seek immediate medical attention. Always consult emergency services for serious exposures.

Sodium nitrite disposal must comply with local and EU waste regulations as hazardous waste. Contact licensed waste disposal companies for proper treatment and disposal. Small quantities can be neutralized by qualified personnel before disposal, but never mix with organic materials or reducing agents. Container disposal requires triple rinsing with appropriate solvents. Maintain detailed waste disposal records and ensure compliance with REACH and national environmental regulations.

Sodium nitrite is classified under ADR as Class 5.1 (Oxidizing substances), Packing Group III. Transport requires appropriate UN-specification packaging and proper labeling with GHS pictograms (GHS03, GHS06, GHS09). Vehicles must carry appropriate emergency equipment and documentation. Drivers need ADR certification for dangerous goods transport. Segregation from combustible materials and other incompatible substances is mandatory during transport across European routes.

Sodium nitrite is subject to comprehensive EU regulations including REACH registration and CLP classification requirements. It carries the signal word 'Danger' with specific hazard statements for oxidizing properties and acute toxicity. The substance is not listed as SVHC (Substance of Very High Concern). Additional food-grade regulations apply when used as preservative. Workplace exposure limits and environmental discharge restrictions may apply depending on usage and location.

Sodium nitrite is available through OYSI, a European distributor of technical chemicals serving industrial customers across Europe. OYSI provides quality sodium nitrite with proper documentation, safety data sheets, and regulatory compliance support. Professional customers can contact OYSI for technical grades suitable for various industrial applications. The company ensures proper packaging, labeling, and transport arrangements compliant with European dangerous goods regulations and customer specifications.