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Tributyl citrate

CAS Number
77-94-1
EC Number
201-071-2
Chemical Formula
C18H32O7
Molecular Weight
360.4 g/mol

Description

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. Contact us for supply of Tributyl citrate Request Quote

Other Names (Synonyms)

Butyl citrate | tributyl 2-hydroxypropane-1,2,3-tricarboxylate | Tri-n-butyl citrate | Citroflex 4 | Citric acid, tributyl ester | 1,2,3-Propanetricarboxylic acid, 2-hydroxy-, tributyl ester | Morflex tbc | 1,2,3-Propanetricarboxylic acid, 2-hydroxy-, 1,2,3-tributyl ester | TBC

Key Technical Features

  • High Purity Grade standard
  • Consistent Batch Quality
  • Full Regulatory & REACH Support
  • Global Logistics Network enabled

Physical Properties

Melting Point-20 °C
Boiling Point327 °C
Density1.043 g/mL at 20 °C(lit.)
Flash Point300 °C
AppearanceColorless or pale-yellow, stable, odorless, nonvolatile liquid. Practically insoluble in water. Combustible.
ColorClear
Odorodorless
FormLiquid
Water Solubilityinsoluble
Refractive Indexn 20/D 1.445
Log P4.324 (est)

Safety & Handling

Danger
GHS05· Corrosive

Hazard Statements

H318Causes serious eye damage

Precautionary Statements

P280Wear protective gloves/protective clothing/eye protection/face protection.
P317Get emergency medical help.
P265Wash … thoroughly after handling.
P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

Trade & Regulatory

HS Code29181500
UN Number2811
ADR Class6.1
Packing GroupII
WGK (Germany)3