Plasticizers
REACH
Tris(2-butoxyethyl) phosphate
CAS Number
78-51-3
EC Number
201-122-9
Abbreviation
TBEP
What is Tris(2-butoxyethyl) phosphate?
Tris(2-butoxyethyl) phosphate (CAS 78-51-3), known in industry as TBEP, is an organophosphate ester used as a plasticizer and flame retardant.
Where is Tris(2-butoxyethyl) phosphate used?
- Coatings, adhesives and sealants: reactive plasticizer improving flexibility and film formation, with flame retardancy in the cured system
- Floor polish and wax: leveling and gloss control, coalescing agent for polymer emulsions
- Textile and leather finishes: softness and reduced ignition risk
- Electronics and printed circuit board laminates: non-halogenated flame retardant meeting fire safety standards
- Its dual functionality lets formulators cut flammability while keeping or improving substrate flexibility.
Commercial specifications
- Drum and IBC quantities
- Technical grade standard; purity specifications and low-acid-value grades for tighter quality requirements
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
What are the physical properties of Tris(2-butoxyethyl) phosphate?
Melting Point -70 °C
Boiling Point 215-228 °C @ Press: 4 Torr
Density 1.020 g/cm³ @ Temp: 20 °C
Flash Point >230 °F
Appearance Slightly yellow, oily liquid. Insoluble or limited solubility in glycerol, glycols, and certain amines; soluble in most organic liquids. Combustible.
Color Clear colorless to very slightly yellow
Form Liquid
Water Solubility Soluble
Vapor Pressure 0.03 mm Hg ( 150 °C)
Refractive Index n 20/D 1.438(lit.)
Log P 3.75 at 20℃
How is Tris(2-butoxyethyl) phosphate classified and handled safely? Learn More
Warning
GHS07· Irritant
Hazard Statements
H312 Harmful in contact with skin
H315 Causes skin irritation
H317 May cause an allergic skin reaction
H319 Causes serious eye irritation
Precautionary Statements
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P264 Wash … thoroughly after handling.
P271 Use only outdoors or in a well-ventilated area.
P272 Contaminated work clothing should not be allowed out of the workplace.
Which trade and regulatory codes apply to Tris(2-butoxyethyl) phosphate?
HS Code 29199000
WGK (Germany) 1