Sodium nitrate

Sodium nitrate is an inorganic salt with the chemical formula NNaO3 and CAS number 7631-99-4. This white crystalline compound has a molecular weight of 84.995 g/mol and occurs naturally as the mineral nitratine. It is highly soluble in water and serves as an important industrial chemical with oxidizing properties, making it valuable in various manufacturing processes and applications.

Sodium nitrate is a white, odorless crystalline solid at room temperature with excellent water solubility. The compound is hygroscopic, meaning it readily absorbs moisture from air. It has a relatively low melting point and decomposes at higher temperatures to release oxygen. Its high solubility in water makes it easily processable in aqueous solutions for various industrial applications.

Sodium nitrate is primarily used as a fertilizer in agriculture due to its nitrogen content, providing essential nutrients for plant growth. Industrial applications include glass manufacturing, where it serves as a flux, metal treatment processes, and as an oxidizing agent in pyrotechnics. It also finds use in food preservation, concrete additives, and various chemical synthesis processes in the pharmaceutical and chemical industries.

Sodium nitrate should be handled with appropriate personal protective equipment including safety goggles, gloves, and protective clothing to prevent skin and eye contact. Work in well-ventilated areas to avoid dust inhalation. As an oxidizing agent, keep it away from combustible materials, reducing agents, and heat sources. Use non-sparking tools and ensure proper grounding to prevent static electricity buildup during handling.

Sodium nitrate must be stored in a cool, dry, well-ventilated area away from heat sources and direct sunlight. Keep containers tightly sealed to prevent moisture absorption and contamination. Store separately from combustible materials, reducing agents, acids, and organic compounds due to its oxidizing properties. Use appropriate storage containers that are compatible with the chemical and ensure proper labeling and inventory management.

In case of skin contact with sodium nitrate, immediately remove contaminated clothing and rinse the affected area with plenty of water for at least 15 minutes. For eye contact, flush eyes thoroughly with clean water and seek medical attention. If inhaled, move the person to fresh air and monitor breathing. For ingestion, do not induce vomiting and seek immediate medical attention while providing supportive care.

Sodium nitrate disposal must comply with local, national, and European waste regulations including the Waste Framework Directive. Contact licensed waste disposal companies for proper handling and treatment. Small quantities may be dissolved in water and disposed of according to local wastewater treatment guidelines. Never dispose of in regular household waste or pour directly into drains without proper authorization from relevant environmental authorities.

Sodium nitrate is classified under ADR Class 5.1 (Oxidizing substances) Packing Group III for transportation. It requires appropriate UN-specification packaging and proper hazard labeling during transport. Vehicles must carry required documentation including transport documents and emergency response information. Drivers need ADR training certification, and the substance must be segregated from incompatible materials during transportation across European roads.

Sodium nitrate is regulated under European REACH regulation requiring registration for commercial use. It falls under CLP regulation for classification and labeling requirements. The substance is not currently listed as a SVHC (Substance of Very High Concern). Users must comply with occupational safety regulations and may need to follow specific restrictions depending on application, particularly in food-related uses where additional food safety regulations apply.

Sodium nitrate is available through OYSI, a trusted European distributor of technical chemicals serving industrial customers across Europe. OYSI provides reliable supply chains, technical support, and regulatory compliance assistance for sodium nitrate purchases. Contact OYSI directly to discuss your specific requirements, quantities, and delivery options to ensure you receive the appropriate grade and quality for your industrial applications.