tricresylfoszfát

Tricresyl phosphate, often abbreviated as TCP, is a chemical compound with the formula C21H21O4P. It is an ester of phosphoric acid and cresols. TCP is a colorless to pale yellow, viscous liquid. It is a mixture of isomers due to the presence of different positional isomers of cresol (ortho-, meta-, and para-cresol). The specific composition of TCP can vary depending on the manufacturing process.

TCP has been used in a variety of industrial applications, primarily as a plasticizer, flame retardant, and lubricant additive. Its ability to impart flexibility to plastics made it a component in certain vinyl resins, lacquers, and coatings. As a flame retardant, it was incorporated into materials to reduce their flammability. In lubricants, it served to improve performance under extreme pressure conditions.

However, concerns have been raised regarding the toxicity and environmental impact of TCP. Certain isomers, particularly those derived from ortho-cresol, have been identified as neurotoxic. Exposure can occur through inhalation, skin contact, or ingestion. While the use of TCP has declined in many applications due to these concerns and the development of safer alternatives, it may still be found in some older products or in specific industrial settings. Regulatory bodies have established guidelines and restrictions on its use and handling.