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Description

Tris(2-butoxyethyl) phosphate (CAS 78-51-3 ), commonly identified in industry as TBEP, is an organophosphate ester used as both a plasticizer and flame retardant across a broad range of industrial formulations. Its dual functionality allows formulators to reduce flammability while maintaining or improving substrate flexibility. This combination drives its specification in demanding end-use applications across various sectors. In coatings, adhesives, and sealants, TBEP functions as a reactive plasticizer that improves flexibility and film formation. It simultaneously contributes flame retardancy to the cured system for enhanced safety. Floor polish and wax formulations rely on TBEP to control leveling and gloss. In these applications, it acts as a coalescing agent for polymer emulsions to ensure a smooth and consistent finish. Textile and leather finishes incorporate it to impart softness and reduce ignition risk in treated fabrics and hides. This makes it a vital component for high-performance materials in the upholstery industry. In electronics and printed circuit board laminates, TBEP is specified where a non-halogenated flame retardant is required. It meets fire safety standards without compromising the overall processability of the components. TBEP is supplied as a clear liquid, typically in drum and IBC quantities suited to industrial procurement volumes. It is available in technical grade, which is the standard specification for most applications. Purity specifications and low-acid-value grades are available for formulators with tighter quality requirements. These options ensure compatibility with sensitive chemical systems and specialized manufacturing needs. Contact us for supply of Tris(2-butoxyethyl) phosphate Request Quote

Other Names (Synonyms)

Tri(2-butoxyethyl) phosphate | TBEP | Phosphoric acid, tris(2-butoxyethyl) ester | Phosphoric acid, tri-(2-butoxyethyl) ester | Tributoxyethyl phosphate | Phosflex T-bep | Tris(butoxyethyl) phosphate | Tributyl cellosolve phosphate

Key Technical Features

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

Physical Properties

Melting Point-70 °C
Boiling Point215-228 °C @ Press: 4 Torr
Density1.020 g/cm³ @ Temp: 20 °C
Flash Point>230 °F
AppearanceSlightly yellow, oily liquid. Insoluble or limited solubility in glycerol, glycols, and certain amines
soluble in most organic liquids. Combustible.
ColorClear colorless to very slightly yellow
FormLiquid
Water SolubilitySoluble
Vapor Pressure0.03 mm Hg ( 150 °C)
Refractive Indexn 20/D 1.438(lit.)
Log P3.75 at 20℃

Safety & Handling

Warning
GHS07· Irritant

Hazard Statements

H312Harmful in contact with skin
H315Causes skin irritation
H317May cause an allergic skin reaction
H319Causes serious eye irritation
H332Harmful if inhaled
H335May cause respiratory irritation
H336May cause drowsiness or dizziness
H402Harmful to aquatic life
H412Harmful to aquatic life with long lasting effects

Precautionary Statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.
P264Wash … thoroughly after handling.
P271Use only outdoors or in a well-ventilated area.
P272Contaminated work clothing should not be allowed out of the workplace.
P273Avoid release to the environment.
P280Wear protective gloves/protective clothing/eye protection/face protection.
P317Get emergency medical help.
P319Get medical advice/attention if you feel unwell.
P321Specific treatment (see … on this label).
P405Store locked up.
P501Dispose of contents/container in accordance with local regulations.
P265Wash … thoroughly after handling.
P352IF ON SKIN: Wash with plenty of water.
P340IF INHALED: Remove person to fresh air and keep comfortable for breathing.
P317Get emergency medical help.
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.
P233Store in a well-ventilated place. Keep container tightly closed.
P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

Trade & Regulatory

HS Code29199000
WGK (Germany)1