Sodium nitrate

Sodium nitrate is an inorganic salt with the chemical formula NNaO3 and CAS number 7631-99-4. This crystalline compound has a molecular weight of 84.995 g/mol and appears as white, odorless crystals or powder. It is highly soluble in water and hygroscopic, meaning it readily absorbs moisture from the air. Sodium nitrate occurs naturally as the mineral nitratine and is also produced synthetically for various industrial applications.

Sodium nitrate is a white, crystalline solid that is odorless and highly soluble in water. It has a molecular weight of 84.995 g/mol and melts at approximately 308°C. The compound is hygroscopic, readily absorbing moisture from air, and decomposes at higher temperatures releasing oxygen. It is also soluble in alcohols and glycerol. As an oxidizing agent, it can support combustion and may react vigorously with reducing agents and organic materials.

Sodium nitrate is primarily used as a fertilizer in agriculture due to its high nitrogen content. It serves as an oxidizing agent in pyrotechnics and explosives manufacturing. The compound is also utilized in glass production to remove air bubbles and improve clarity. In the food industry, it functions as a preservative and curing agent for meat products. Additional applications include metal treatment, rocket propellants, and as a raw material for producing other nitrates.

Sodium nitrate should be handled with appropriate personal protective equipment including safety goggles, gloves, and dust masks to prevent inhalation and skin contact. Work in well-ventilated areas to avoid dust accumulation. Avoid contact with combustible materials, reducing agents, and acids as it can cause vigorous reactions. Use non-sparking tools and ensure no smoking or open flames are present. Wash hands thoroughly after handling and avoid eating or drinking in work areas.

Sodium nitrate should be stored in a cool, dry, well-ventilated area away from heat sources and direct sunlight. Keep containers tightly sealed to prevent moisture absorption due to its hygroscopic nature. Store separately from combustible materials, reducing agents, acids, and metals to prevent dangerous reactions. Use fire-resistant storage areas and ensure adequate spacing between containers. Regularly inspect storage areas for signs of contamination or deterioration of packaging materials.

In case of skin contact with sodium nitrate, immediately wash the affected area with plenty of water and soap for at least 15 minutes. If eye contact occurs, flush eyes with clean water for 15-20 minutes and seek medical attention. For inhalation, move the person to fresh air and seek medical help if breathing difficulties persist. If ingested, rinse mouth with water and seek immediate medical attention. Do not induce vomiting unless directed by medical professionals.

Sodium nitrate disposal must comply with local and national waste regulations as it is classified as hazardous waste. Contact licensed waste disposal companies for proper handling and treatment. Small quantities can be neutralized and diluted before disposal, but large amounts require professional waste management. Never dispose of in regular trash, sewers, or water systems as it can cause environmental contamination. Maintain proper documentation of disposal activities for regulatory compliance.

Sodium nitrate is classified under ADR Class 5.1 (Oxidizing substances) Packing Group III for transport. It must be packaged in UN-approved containers with proper labeling and documentation. Transport vehicles must carry appropriate placards and emergency information. Drivers require ADR certification for dangerous goods transport. Ensure segregation from incompatible materials during transport and follow specific loading and unloading procedures. Emergency equipment must be available during transportation.

Sodium nitrate is regulated under various European frameworks including REACH registration requirements for manufacturers and importers. It falls under CLP regulation for classification and labeling, though it currently has no specific hazard classification. Transport regulations under ADR apply due to its oxidizing properties. Some countries may have specific restrictions on quantities for purchase due to potential misuse. Users must comply with occupational health and safety regulations and environmental protection standards.

Sodium nitrate is available through OYSI, a European distributor of chemical products, which can supply various grades and quantities to meet industrial and professional needs. OYSI provides reliable sourcing with proper documentation and regulatory compliance support. The compound is also available through other specialized chemical distributors and suppliers across Europe. When purchasing, ensure the supplier provides appropriate safety data sheets, certificates of analysis, and meets all regulatory requirements for your specific application.