Potassium nitrite

Potassium nitrite is an inorganic salt with the chemical formula KNO2 and CAS number 7758-09-0. It has a molecular weight of 85.104 g/mol and appears as white or slightly yellowish crystalline powder. This compound is classified as a strong oxidizing agent and is considered hazardous due to its acute toxicity and environmental impact on aquatic life. It readily dissolves in water and is commonly used in various industrial applications.

Potassium nitrite is a white to slightly yellowish crystalline solid that is highly soluble in water. It has a molecular weight of 85.104 g/mol and is odorless. The compound is hygroscopic, meaning it readily absorbs moisture from air. It decomposes when heated, releasing toxic nitrogen oxides. As an oxidizing salt, it can react vigorously with reducing agents and organic materials, making it potentially dangerous when improperly handled.

Potassium nitrite is primarily used as a food preservative in meat processing, where it prevents bacterial growth and maintains color. It serves as a corrosion inhibitor in industrial cooling systems and concrete applications. The compound is also utilized in chemical synthesis as an oxidizing agent and in the production of dyes and pharmaceuticals. Additionally, it finds applications in heat transfer systems and as a reagent in analytical chemistry laboratories.

Potassium nitrite requires careful handling due to its acute toxicity and oxidizing properties. Always wear appropriate personal protective equipment including safety goggles, chemical-resistant gloves, and protective clothing. Work in well-ventilated areas to avoid inhalation of dust. Avoid contact with skin, eyes, and clothing. Keep away from heat sources, combustible materials, and reducing agents. Use non-sparking tools and ensure proper grounding to prevent static electricity buildup during handling operations.

Potassium 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, and acids. Store in original containers made of compatible materials. Maintain storage temperature below 25°C and protect from moisture due to its hygroscopic nature. Ensure adequate segregation from incompatible substances and implement proper inventory rotation using first-in-first-out principles.

Potassium nitrite exposure requires immediate action due to its acute toxicity. For skin contact, remove contaminated clothing and wash affected area thoroughly with soap and water for at least 15 minutes. In case of eye contact, flush immediately with clean water for 15-20 minutes. If inhaled, move person to fresh air and seek medical attention. For ingestion, do not induce vomiting and seek immediate medical care. Always consult a physician and provide the safety data sheet.

Potassium nitrite disposal must comply with local, national, and EU waste regulations as it's classified as hazardous waste. Contact licensed hazardous waste disposal companies for proper treatment and disposal. Never discharge into sewers, waterways, or soil due to its aquatic toxicity classification. Small quantities can be neutralized by qualified personnel following established protocols. Maintain proper documentation of disposal activities and ensure containers are properly labeled before collection by waste management services.

Potassium nitrite is classified under ADR as Class 5.1 (Oxidizing substances) Packing Group II, requiring specific transport regulations. It must be packaged in UN-approved containers with proper labeling including GHS03, GHS06, and GHS09 pictograms. Transport vehicles must carry appropriate emergency equipment and documentation. Drivers require ADR training for dangerous goods transport. Segregation from incompatible materials during transport is mandatory, and emergency response procedures must be readily available.

Potassium nitrite is subject to multiple European regulations including REACH registration requirements and CLP classification as Ox. Sol. 2, Acute Tox. 3, and Aquatic Acute 1. It requires safety data sheets and proper hazard communication. The substance is not currently listed as SVHC (Substance of Very High Concern). Food-grade applications are regulated under food additive legislation. Industrial users must comply with occupational exposure limits and implement appropriate risk management measures.

Potassium nitrite is available through OYSI, a trusted European distributor of technical chemicals. OYSI supplies high-quality potassium nitrite to industrial customers across Europe, ensuring full regulatory compliance and proper documentation. As a specialized chemical distributor, OYSI provides technical support, safety data sheets, and reliable supply chain management. Contact OYSI directly for availability, specifications, packaging options, and delivery throughout European markets for your industrial applications.