Trimethylolpropane (TMP): A Trihydric Alcohol Supporting High-Performance Esters and Resins

Trimethylolpropane (TMP)
— A trihydric alcohol supporting high-performance ester and resin applications —
Trimethylolpropane (TMP) is a **trihydric alcohol (triol)** with three hydroxyl groups, and it is an important basic chemical widely used as a raw material for polyol esters for lubricants and various resins.
It is characterized by excellent heat resistance, low volatility, and structural stability, and has gained a high reputation in aircraft and industrial lubricants, as well as in resin applications requiring high durability. Ease of handling and stable supply are also key features.
Basic Information
* **English Name**: Trimethylolpropane
* **Abbreviation**: TMP
* **CAS No.**: 77-99-6
* **Molecular Formula**: C₆H₁₄O₃
* **Molecular Weight**: 134.17
Main Applications
* **Lubricant Field**
Polyol ester (POE) lubricants, aircraft lubricants, refrigeration oils, compressor oils, industrial lubricants for high temperature and heavy loads
* **Resin Field**
Polyester resins, alkyd resins, polyurethane resins
* **Paints and Coatings**
Industrial paints, high-durability coatings, UV-curable resins
* **Adhesives and Electronic Materials**
Industrial adhesives, resins and encapsulants for electronic components
Typical Physical Properties
* **Appearance**: White crystalline solid
* **Melting Point**: Approx. 56-58 ℃
* **Boiling Point**: Approx. 295 ℃ (Decomposition)
* **Solubility**: Soluble in water and alcohol
* **Hygroscopicity**: Yes
Summary
Trihydric alcohol TMP is a representative polyol raw material with excellent heat resistance and low volatility, used in esters for lubricants and high-durability resin applications.
Registration Date: April 27, 2026
Update Date: April 27, 2026