Triphenyl phosphite

Triphenyl phosphite is an organophosphorus compound with the molecular formula C18H15O3P and CAS number 101-02-0. It appears as a colorless to pale yellow liquid with a molecular weight of 310.3 g/mol. This chemical belongs to the phosphite ester family and is classified as a hazardous substance requiring careful handling due to its irritant properties and environmental toxicity.

Triphenyl phosphite is a colorless to pale yellow liquid at room temperature with a molecular formula of C18H15O3P and molecular weight of 310.3 g/mol. It has limited water solubility but is soluble in organic solvents. The compound is sensitive to moisture and can hydrolyze in the presence of water, forming phosphorous acid and phenol derivatives.

Triphenyl phosphite is primarily used as an antioxidant and stabilizer in polymer processing, particularly for PVC and other plastics. It serves as a processing stabilizer that prevents degradation during high-temperature manufacturing processes. Additionally, it functions as an intermediate in organic synthesis and as a ligand in organometallic chemistry applications within various industrial processes.

Triphenyl phosphite requires careful handling due to its skin and eye irritant properties (Skin Irrit. 2, Eye Irrit. 2). Essential safety equipment includes chemical-resistant gloves, safety goggles, and protective clothing. Work should be conducted in well-ventilated areas or under fume hoods. Avoid direct skin and eye contact, and ensure immediate access to eyewash stations and emergency showers.

Triphenyl phosphite should be stored in a cool, dry, well-ventilated area away from heat sources and direct sunlight. Keep containers tightly sealed to prevent moisture ingress, as the compound is sensitive to hydrolysis. Store away from strong oxidizing agents and acids. Ensure storage areas comply with local regulations for hazardous chemicals and maintain appropriate spill containment measures.

In case of skin contact with triphenyl phosphite, immediately remove contaminated clothing and rinse affected area with plenty of water for at least 15 minutes. For eye contact, flush immediately with clean water for at least 15 minutes while holding eyelids open. If inhaled, move to fresh air immediately. Seek medical attention if irritation persists or if large amounts were involved.

Triphenyl phosphite disposal must comply with local and national hazardous waste regulations due to its environmental toxicity classification (Aquatic Acute 1, Aquatic Chronic 1). The substance should never be disposed of down drains or into the environment. Contact licensed hazardous waste disposal companies for proper treatment and disposal. Small quantities may require neutralization before disposal following regulatory guidelines.

Triphenyl phosphite is classified as ADR Class 9 (Miscellaneous dangerous goods), Packing Group III for transport purposes. Packages must be properly labeled with appropriate hazard markings and UN identification numbers. Transportation should comply with ADR regulations for dangerous goods, including proper packaging, documentation, and vehicle requirements. Professional logistics companies experienced in chemical transport are recommended.

Triphenyl phosphite is subject to REACH regulation in Europe and must comply with CLP classification requirements, displaying GHS07 and GHS09 pictograms with 'Warning' signal word. It is not currently listed as an SVHC (Substance of Very High Concern). Users must ensure proper safety data sheets are available and follow workplace exposure guidelines and environmental protection measures.

Triphenyl phosphite is available through OYSI, a European distributor of technical chemicals serving industrial customers across Europe. OYSI provides this compound with full regulatory compliance, proper documentation, and technical support. Contact OYSI directly for availability, specifications, packaging options, and delivery to your location within Europe for your industrial applications.