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Tris(2-ethylhexyl) phosphate

CAS Number
78-42-2
EC Number
201-116-6
Chemical Formula
C24H51O4P
Molecular Weight
434.6 g/mol

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. Contact us for supply of Tris(2-ethylhexyl) phosphate Request Quote

Other Names (Synonyms)

Tri(2-ethylhexyl) phosphate | Phosphoric acid, tris(2-ethylhexyl) ester | 2-Ethyl-1-hexanol phosphate | TEHP | BQC0BKB72S | TOF | Flexol TOF

Key Technical Features

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

Physical Properties

Melting Point-74 °C
Boiling Point215 °C @ Press: 4 Torr
Density0.924 g/cm³ @ Temp: 26 °C
Flash Point>230 °F
ColorColourless
FormLiquid
Water Solubility<0.1 g/100 mL at 18 ºC
Vapor Pressure2.1 mm Hg ( 20 °C)
Refractive Indexn 20/D 1.444(lit.)
pH7 (H2O, 20℃)

Safety & Handling

Warning
GHS07· IrritantGHS09· Environment

Hazard Statements

H315Causes skin irritation
H319Causes serious eye irritation
H400Very toxic to aquatic life
H410Very toxic to aquatic life with long lasting effects

Precautionary Statements

P264Wash … thoroughly after handling.
P273Avoid release to the environment.
P280Wear protective gloves/protective clothing/eye protection/face protection.
P321Specific treatment (see … on this label).
P391Collect spillage.
P501Dispose of contents/container in accordance with local regulations.
P265Wash … thoroughly after handling.
P352IF ON SKIN: Wash with plenty of water.
P317Get emergency medical help.
P317If eye irritation persists: Get medical advice/attention. Get emergency medical help.
P364Take off contaminated clothing and wash it before reuse.
P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

Trade & Regulatory

HS Code29190090
Storage Class10 - Combustible liquids
WGK (Germany)2