Tributyl citrate

Tributyl citrate (CAS 77-94-1), commonly referred to as TBC or butyl citrate, is a citrate ester plasticizer used across polymer processing, personal care, and food-contact applications. It functions primarily as a plasticizer and stabilizer, imparting flexibility and processing performance to polymer systems while meeting low-toxicity requirements that restrict alternatives.

In PVC and cellulose-based polymer formulations, TBC improves film flexibility and elongation, making it a preferred choice for food-contact packaging and medical tubing. It is also used in children's products where regulatory compliance limits phthalate use. Personal care formulators incorporate it into nail lacquers and film-forming cosmetic products.

As a plasticizing agent, it supports adhesion and wear performance. In food-grade contexts, TBC functions as a humectant and stabilizer in flavor encapsulation and coating systems. It also acts as an antioxidant synergist in fat-containing formulations, helping to extend shelf life in processed food applications. The material is supplied as a clear, low-viscosity liquid.

Food-grade and technical-grade specifications are both commercially available, with food-grade material produced to FCC standards for regulated applications. Buyers sourcing for EU food-contact or cosmetic end uses should confirm compliance documentation against relevant regional regulations to ensure full safety and quality standards.