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1,1,1-tris(p-hydroxyphenyl)ethane

CAS Number
27955-94-8
EC Number
405-800-7
Chemical Formula
C20H18O3
Molecular Weight
306.4 g/mol

Description

1,1,1-Tris(p-hydroxyphenyl)ethane , also known as THPE, is a trifunctional phenolic monomer used as a branching agent and crosslinker in polymer systems. Its three reactive hydroxyl groups allow formulators to build controlled network structures. This chemical, identified by CAS 27955-94-8 , is essential for epoxy, polycarbonate, and specialty coating resins. In epoxy coating and powder coating formulations, it introduces branching points that improve crosslink density. These additions enhance the chemical resistance and thermal performance of the cured film. Adhesive and sealant manufacturers incorporate it to tune mechanical properties and increase cohesive strength in structural systems. Polycarbonate producers use it as a chain-branching comonomer to achieve high-melt-strength grades. These grades are particularly suited for demanding blow molding and extrusion applications in industrial manufacturing. In rubber compounding and elastomer systems, it functions as a phenolic curative and stabilizer. This contributes to long-term oxidative stability and durability in various harsh environmental conditions. The product is supplied as a white to off-white crystalline powder for easy handling. Technical and high-purity grades are available, with purity specifications typically at 98% or above for processing. These specifications ensure the material meets rigorous polymer-grade requirements. Packaging ranges from kilogram-scale bags for laboratory use to bulk quantities for large-scale industrial polymer production. Contact us for supply of 1,1,1-tris(p-hydroxyphenyl)ethane Request Quote

Other Names (Synonyms)

1,1,1-tris(4-hydroxyphenyl)ethane | 1,1,1-tris-(p-hydroxyphenyl)ethane | 4-[1,1-bis(4-hydroxyphenyl)ethyl]phenol | Tris(4-hydroxyphenyl)ethane | THPE

Key Technical Features

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

Physical Properties

Melting Point246-248 °C (lit.)
Boiling Point531.8±45.0 °C(Predicted)
Density1.252±0.06 g/cm3(Predicted)
ColorWhite to Almost white
Formpowder to crystal
Water Solubility25.1mg/L at 20℃
Vapor Pressure0Pa at 25℃
Log P3.88 at 20℃

Safety & Handling

GHS09· Environment

Hazard Statements

H401Toxic to aquatic life
H411Toxic to aquatic life with long lasting effects

Precautionary Statements

P273Avoid release to the environment.
P391Collect spillage.
P501Dispose of contents/container in accordance with local regulations.

Trade & Regulatory

HS Code2907290030
UN Number3077
ADR Class9
Packing GroupIII
Storage Class11 - Combustible Solids
WGK (Germany)2