Triethyl phosphate

Triethyl phosphate is an organophosphorus compound with the molecular formula C6H15O4P and CAS number 78-40-0. This chemical substance has a molecular weight of 182.15 g/mol and appears as a colorless liquid at room temperature. It belongs to the phosphate ester family and is classified under GHS as Acute Tox. 4 with a Warning signal word, indicating moderate toxicity concerns that require proper handling precautions.

Triethyl phosphate is a colorless, oily liquid with a characteristic mild odor at room temperature. It exhibits good solubility in organic solvents and has limited solubility in water. The compound is relatively stable under normal conditions but can hydrolyze slowly in the presence of moisture. Its phosphate ester structure gives it flame-retardant properties, making it valuable in various industrial applications requiring fire resistance.

Triethyl phosphate is primarily used as a flame retardant and plasticizer in various industrial applications. It serves as an additive in plastics, resins, and coatings to improve their fire resistance properties. The compound is also utilized as a solvent in chemical processes and as an intermediate in the synthesis of other organophosphorus compounds. Additionally, it finds applications in the production of catalysts and as a component in specialty chemical formulations.

Triethyl phosphate requires careful handling due to its Acute Tox. 4 classification under GHS07 pictogram. Essential personal protective equipment includes chemical-resistant gloves, safety goggles, and appropriate protective clothing. Work in well-ventilated areas or under fume extraction systems to minimize inhalation exposure. Avoid direct skin and eye contact, and prevent ingestion. Always wash hands thoroughly after handling and ensure emergency shower and eyewash stations are accessible in the work area.

Triethyl phosphate should be stored in tightly sealed containers in a cool, dry, and well-ventilated area away from heat sources and direct sunlight. Keep containers upright and protected from physical damage. Store away from strong oxidizing agents, acids, and bases to prevent unwanted reactions. Ensure storage areas have appropriate spill containment measures and maintain temperatures within recommended ranges. Regular inspection of containers for leaks or deterioration is essential for safe storage.

Triethyl phosphate exposure requires immediate first aid measures depending on the contact route. For skin contact, immediately remove contaminated clothing and wash the affected area thoroughly with soap and water for at least 15 minutes. In case of eye contact, rinse immediately with clean water for 15-20 minutes and seek medical attention. If inhaled, move the person to fresh air immediately. For ingestion, do not induce vomiting and seek immediate medical assistance.

Triethyl phosphate disposal must comply with local, national, and European waste regulations due to its hazardous classification. The substance should be treated as hazardous waste and disposed of through licensed waste management facilities capable of handling toxic chemicals. Never dispose of it down drains, in regular trash, or into the environment. Contact certified waste disposal companies for proper collection and treatment. Maintain documentation of disposal activities for regulatory compliance purposes.

Triethyl phosphate is classified under ADR regulations as Class 6.1 (Toxic substances), Packing Group III, indicating moderate danger during transport. Transportation must comply with ADR requirements including proper packaging, labeling, and documentation. Packages must display appropriate hazard labels and markings. Transport vehicles require suitable equipment for spill containment and emergency response. Only trained personnel should handle transportation, and proper shipping papers must accompany all shipments across European borders.

Triethyl phosphate is subject to European chemical regulations including REACH and CLP requirements for registration, classification, labeling, and packaging. The substance is not currently listed as a Substance of Very High Concern (SVHC) under REACH. Companies handling quantities above specified thresholds must comply with registration obligations. Safety data sheets must be provided to downstream users, and the GHS classification (Acute Tox. 4, Warning) must be clearly communicated throughout the supply chain.

Triethyl phosphate is available through OYSI, a specialized European distributor of technical chemicals serving industrial customers across the region. OYSI provides reliable supply chains for organophosphorus compounds with proper regulatory compliance and technical support. As a professional chemical distributor, OYSI ensures products meet European quality standards and regulatory requirements. Contact OYSI directly for availability, specifications, and technical assistance regarding triethyl phosphate procurement for your industrial applications.