Triethyl citrate
Description
Triethyl citrate (CAS 77-93-0), also known as TEC, Citroflex 2, and E1505, is a citrate ester plasticizer and solvent derived from citric acid and ethanol. It functions as a plasticizer, film-forming aid, and flavor fixative across food-contact, cosmetic, and polymer applications.
Low toxicity and regulatory acceptance are priorities for formulators and buyers using this material. In food packaging and biodegradable films, TEC plasticizes PLA and cellulose-based polymers, improving flexibility without compromising food-contact compliance.
Personal care formulators use it as a film former and fixative in nail lacquers, hair sprays, and skin coatings. In these applications, it supports resin adhesion and controlled release for various cosmetic formulations.
As a flavoring solvent under FEMA 3083, it carries and stabilizes flavor compounds in confectionery, baked goods, and beverage applications. This versatility makes it a staple in the food and beverage industry.
Pharmaceutical coating systems also rely on TEC to plasticize enteric and sustained-release film coatings on tablets and capsules. It ensures the integrity of the coating during the manufacturing and storage process.
Triethyl citrate is supplied as a clear, low-viscosity liquid in drum and IBC quantities. Food-grade and pharmaceutical-grade material is available to FCC, USP, and Ph. Eur. specifications, supporting use across regulated end markets.
Technical-grade material is also offered for industrial polymer and coating applications where food or pharma compliance is not required. This allows for cost-effective solutions in non-regulated industrial manufacturing sectors.
Physical Properties
| Melting Point | -55 °C |
| Boiling Point | 294 °C |
| Density | 1.1369 g/cm³ @ Temp: 20 °C |
| Flash Point | >230 °F |
| Appearance | Colorless, mobile liquid; bitter taste. Solubility in water 6.5 g/100 cc; solubility in oil 0.8 g/100 cc. Combustible. |
| Color | Clear |
| Odor | odorless |
| Form | Liquid |
| Water Solubility | 5.7 g/100 mL (25 ºC) |
| Vapor Pressure | 1 mm Hg ( 107 °C) |
| Refractive Index | n 20/D 1.442(lit.) |
| Log P | 1.267 (est) |
Safety & Handling (Learn More)
Trade & Regulatory
| HS Code | 29181500 |
| Storage Class | 10 - Combustible liquids |
| WGK (Germany) | 1 |
Documentation
Other Names
triethyl 2-hydroxypropane-1,2,3-tricarboxylate|Ethyl citrate|Citroflex 2|Eudraflex|Hydragen CAT|Citric acid, triethyl ester|1,2,3-Propanetricarboxylic acid, 2-hydroxy-, triethyl ester|TEC|E1505
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