Hydroxylamine;hydrochloride

Hydroxylamine hydrochloride is an inorganic chemical compound with the molecular formula ClH4NO and CAS number 5470-11-1. It is the hydrochloride salt of hydroxylamine, appearing as a white crystalline solid that is highly soluble in water. With a molecular weight of 69.49 g/mol, this compound is classified as hazardous with multiple danger classes including corrosivity, potential carcinogenicity, and acute toxicity. It requires careful handling due to its reactive nature and health hazards.

Hydroxylamine hydrochloride is a white crystalline solid at room temperature with excellent water solubility. The compound has a molecular weight of 69.49 g/mol and contains both hydroxylamine and chloride components. It is hygroscopic, meaning it readily absorbs moisture from air. The substance is acidic in aqueous solution due to the hydrochloride salt formation. It exhibits corrosive properties and is thermally unstable, potentially decomposing upon heating to release toxic gases.

Hydroxylamine hydrochloride is primarily used as a reducing agent and intermediate in organic synthesis. It serves as a key reagent for converting aldehydes and ketones into oximes, which are important in pharmaceutical manufacturing. The compound is also utilized in polymer chemistry as a chain terminator and in analytical chemistry for various qualitative and quantitative determinations. Additionally, it finds applications in photographic developers and as a starting material for producing other hydroxylamine derivatives in industrial processes.

Hydroxylamine hydrochloride requires strict safety protocols including wearing protective equipment such as chemical-resistant gloves, safety goggles, and lab coats. Work should be conducted in well-ventilated areas or under fume hoods to prevent inhalation exposure. Avoid skin and eye contact due to its corrosive and irritating properties. Use non-sparking tools and avoid heat sources as the compound can decompose. Always wash hands thoroughly after handling and never eat, drink, or smoke in work areas where this chemical is present.

Hydroxylamine hydrochloride must be stored in a cool, dry, well-ventilated area away from heat sources and direct sunlight. Keep containers tightly closed in original packaging to prevent moisture absorption and contamination. Store separately from strong oxidizing agents, acids, and bases to avoid dangerous reactions. The storage area should be equipped with appropriate spill containment measures and emergency equipment. Maintain temperatures below 25°C and ensure good air circulation to prevent accumulation of any decomposition products.

Hydroxylamine hydrochloride exposure requires immediate action depending on contact type. For skin contact, immediately flush with plenty of water for at least 15 minutes and remove contaminated clothing. For eye contact, rinse thoroughly with water for at least 15 minutes while holding eyelids open. If inhaled, move to fresh air immediately and seek medical attention if breathing difficulties occur. In case of ingestion, do not induce vomiting and seek immediate medical attention. Always consult a poison control center or physician for serious exposures.

Hydroxylamine hydrochloride disposal must comply with local, national, and international hazardous waste regulations. The compound cannot be disposed of in regular waste streams due to its hazardous classification. Contact licensed hazardous waste disposal companies for proper collection and treatment. Small laboratory quantities may require neutralization under controlled conditions before disposal. Always consult safety data sheets and local environmental authorities for specific disposal requirements. Never pour down drains or release into the environment due to potential ecological harm.

Hydroxylamine hydrochloride is classified under ADR Class 8 (corrosive substances) Packing Group III for transportation purposes. It must be packaged in UN-approved containers with appropriate labeling including corrosive hazard symbols and proper shipping names. Transport vehicles must comply with ADR regulations for corrosive materials, including proper ventilation and emergency equipment. Drivers require ADR training and appropriate documentation must accompany shipments. The substance requires segregation from incompatible materials during transport to prevent dangerous reactions.

Hydroxylamine hydrochloride is subject to comprehensive chemical regulations including REACH registration in Europe and CLP classification requirements. The compound is classified as Category 2 carcinogen, requiring specific labeling and safety data sheet provisions. It falls under various national chemical inventories and may require import/export permits in certain jurisdictions. Industrial users must comply with occupational exposure limits and workplace safety regulations. The substance is not currently listed as an SVHC (Substance of Very High Concern) under REACH.

Hydroxylamine hydrochloride is available through specialized chemical distributors in Europe, including OYSI, which serves as a reliable European supplier of technical chemicals. OYSI provides this compound with proper documentation, safety data sheets, and regulatory compliance for industrial and research applications. When purchasing, ensure the supplier can provide certificates of analysis, proper packaging, and ADR-compliant transportation. Always verify that suppliers meet REACH requirements and can provide the necessary regulatory documentation for your specific application and location.