Tris(2-ethylhexyl) phosphate
Description
Tris(2-ethylhexyl) phosphate (CAS 78-42-2), commonly abbreviated as TEHP, is an organophosphate ester used across industrial manufacturing as a plasticizer, flame retardant, and solvent.
Its low volatility and high boiling point make it a preferred choice where thermal stability and long-term performance in finished products are critical procurement considerations for chemical buyers.
In plastics and polymer processing, TEHP functions as a non-halogenated flame retardant and plasticizer in PVC, rubber, and synthetic resins, improving flexibility while meeting fire performance requirements.
Coatings and adhesives manufacturers incorporate it as a solvent and plasticizing agent to control viscosity, film formation, and substrate adhesion in various industrial formulations and applications.
The textile and leather industries use TEHP as a processing aid and finishing component, where its compatibility with synthetic fibers and surface treatments supports durable end-product performance.
In lubricants and metalworking fluids, it acts as an extreme-pressure additive and functional solvent, extending fluid service life under demanding operating conditions and high-stress environments.
TEHP is supplied as a clear, low-viscosity liquid in drum and IBC quantities, with bulk tanker options available for high-volume procurement and large-scale industrial manufacturing needs.
It is offered in technical grade as the standard commercial specification across most supply channels. Purity levels typically range from 99% and above, with documentation including COA and TDS.
Physical Properties
| Melting Point | -74 °C |
| Boiling Point | 215 °C @ Press: 4 Torr |
| Density | 0.924 g/cm³ @ Temp: 26 °C |
| Flash Point | >230 °F |
| Color | Colourless |
| Form | Liquid |
| Water Solubility | <0.1 g/100 mL at 18 ºC |
| Vapor Pressure | 2.1 mm Hg ( 20 °C) |
| Refractive Index | n 20/D 1.444(lit.) |
| pH | 7 (H2O, 20℃) |
Safety & Handling (Learn More)
Trade & Regulatory
| HS Code | 29190090 |
| Storage Class | 10 - Combustible liquids |
| WGK (Germany) | 2 |
Documentation
Other Names
Tri(2-ethylhexyl) phosphate|Phosphoric acid, tris(2-ethylhexyl) ester|2-Ethyl-1-hexanol phosphate|TEHP|BQC0BKB72S|TOF|Flexol TOF
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