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Trimethylolpropane
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Trimethylolpropane

ELFATTM – tMOPO

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Trimethylolpropane (TMP) is a triol widely used in the production of alkyd resins, polyurethanes, and synthetic lubricants. Its multifunctional hydroxyl groups make it an excellent cross-linking

CAS Number

77-99-6

HS Code

29053980

INCI Name

Trimethylolpropane (TMP)

Molecular Formula

C6H14O3

Home/Products/Trimethylolpropane

Trimethylolpropane

ELFATTM – tMOPO

Trimethylolpropane (TMP) is a triol widely used in the production of alkyd resins, polyurethanes, and synthetic lubricants. Its multifunctional hydroxyl groups make it an excellent cross-linking agent, enhancing the durability and performance of coatings and adhesives. TMP is

CAS Number

77-99-6

INCI Name

Trimethylolpropane (TMP)

HS Code

29053980

Molecular Formula

C6H14O3

Get Pricing for This Product

Need pricing? Request a quote for this product and we'll get back to you shortly.

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We deliver domestic samples within 24 - 48 hours, helping you evaluate products and move to procurement without delays.

Trimethylolpropane
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Product Specification

AppearanceWhite crystalline solid
OdorFaint, characteristic
Molecular Weight134.17 g/mol
Density / Specific Gravity1.18 g/cm³
Viscosity157 mPa·s (at 75°C)
Refractive Index1.4716 (at 70°C)
Ph (Aqueous Solution)6.5 (100g/l, H2O, 20℃)
Assay / Purity>98.5%

Physical Properties

PropertySpecification
AppearanceWhite crystalline solid
OdorFaint, characteristic
Molecular Weight134.17 g/mol
Density / Specific Gravity1.18 g/cm³
Viscosity157 mPa·s (at 75°C)
Refractive Index1.4716 (at 70°C)
Ph (Aqueous Solution)6.5 (100g/l, H2O, 20℃)
Assay / Purity>98.5%

Chemical Properties

PropertySpecification
Pka14.01±0.10 (Predicted)
Ionic NatureNon-ionic
IncompatibilitiesStrong oxidizing agents
Hazardous Reactions / Decomposition ProductsCarbon monoxide (CO) and Carbon dioxide (CO2) under fire conditions.

Thermal Properties

PropertySpecification
Melting Point58-61 °C
Boiling Point295 °C
Flash Point172 °C / 341.6 °F
Autoignition Temperature414 °C / 777.2 °F
Thermal StabilityStable under normal conditions.

About Trimethylolpropane

Trimethylolpropane (TMP) manufacturers and suppliers play a crucial role in the chemical industry, providing a versatile triol used in a wide range of applications. TMP is a key ingredient in the production of alkyd resins, polyurethanes, and synthetic lubricants, thanks to its multifunctional hydroxyl groups that enable effective cross-linking. This property enhances the durability and performance of coatings, adhesives, and sealants. TMP is also used in the manufacture of plasticizers, improving the flexibility and workability of polymers. As a building block for chemical intermediates, TMP is essential in various industrial processes. Manufacturers focus on producing high-purity TMP to meet the stringent demands of industries such as coatings and adhesives. The production process is carefully controlled to ensure consistency and stability, which are crucial for the compound's effectiveness in various applications. Sustainability is an increasing focus for TMP manufacturers, with many adopting greener practices to minimize their environmental impact. These efforts include optimizing energy use during production and reducing waste emissions. The trend toward eco-friendly manufacturing aligns with the growing demand for sustainable raw materials in the chemical industry.

  • Versatile Cross-Linking Agent: Enhances durability and performance in coatings and adhesives.
  • Function: Crosslinking agent, chain extender, and chemical intermediate.
  • High Purity Standards: Ensures effectiveness in industrial applications.
  • Features: Contains three primary hydroxyl groups, provides high thermal and oxidative stability, and enhances chemical resistance.
  • Eco-Friendly Production: Focus on minimizing energy use and waste.
  • Benefits: Improves hardness, gloss, durability, and weather resistance in coatings and resins. Acts as a precursor to various polymers, offering versatility in formulation.
  • Key Ingredient in Polyurethanes: Improves mechanical properties and thermal stability.
  • Essential for Synthetic Lubricants: Provides excellent thermal stability and low-temperature performance.

About Trimethylolpropane

Trimethylolpropane (TMP) manufacturers and suppliers play a crucial role in the chemical industry, providing a versatile triol used in a wide range of applications. TMP is a key ingredient in the production of alkyd resins, polyurethanes, and synthetic lubricants, thanks to its multifunctional hydroxyl groups that enable effective cross-linking. This property enhances the durability and performance of coatings, adhesives, and sealants. TMP is also used in the manufacture of plasticizers, improving the flexibility and workability of polymers. As a building block for chemical intermediates, TMP is essential in various industrial processes. Manufacturers focus on producing high-purity TMP to meet the stringent demands of industries such as coatings and adhesives. The production process is carefully controlled to ensure consistency and stability, which are crucial for the compound's effectiveness in various applications. Sustainability is an increasing focus for TMP manufacturers, with many adopting greener practices to minimize their environmental impact. These efforts include optimizing energy use during production and reducing waste emissions. The trend toward eco-friendly manufacturing aligns with the growing demand for sustainable raw materials in the chemical industry.

  • Versatile Cross-Linking Agent: Enhances durability and performance in coatings and adhesives.
  • Function: Crosslinking agent, chain extender, and chemical intermediate.
  • High Purity Standards: Ensures effectiveness in industrial applications.
  • Features: Contains three primary hydroxyl groups, provides high thermal and oxidative stability, and enhances chemical resistance.
  • Eco-Friendly Production: Focus on minimizing energy use and waste.
  • Benefits: Improves hardness, gloss, durability, and weather resistance in coatings and resins. Acts as a precursor to various polymers, offering versatility in formulation.
  • Key Ingredient in Polyurethanes: Improves mechanical properties and thermal stability.
  • Essential for Synthetic Lubricants: Provides excellent thermal stability and low-temperature performance.

Regulatory Compliance

RegionMax Allowed LevelNotesCertification Body
United States-Authorized for use in resinous and polymeric coatings, including those for food contact surfaces, under specific conditions. Listed on the TSCA Inventory.TSCA
European Union-Self-classified as a suspected human reproductive toxicant (Repr. 2). A proposal to classify it as a category 1B reproductive toxicant was withdrawn in March 2026. TMP itself is not prohibited in cosmetics, but its derivative, Trimethylolpropane Triacrylate (TMPTA), is prohibited.REACH
Canada-Listed on the Domestic Substances List (DSL). Not found on the Cosmetic Ingredient Hotlist of prohibited or restricted substances.DSL Listing
India-Complies with Indian chemical safety regulations.-
Japan-Listed on the Chemical Substances Control Law (CSCL) inventory.CSCL
Australia-Listed on the Australian Inventory of Industrial Chemicals (AIIC).AIIC Listing
China-Listed on the Inventory of Existing Chemical Substances in China (IECSC).IECSC Listing
Republic of Korea-Listed on the Korean Existing Chemicals List (KECL).KECL Listing
ASEAN-TMP is not regulated under the ASEAN Cosmetic Directive (ACD). However, its derivative, Trimethylolpropane Triacrylate (TMPTA), is listed on Annex II (prohibited substances).-

FAQs - Trimethylolpropane

What is Trimethylolpropane used for?
Trimethylolpropane is used in the production of alkyd resins, polyurethanes, synthetic lubricants, and as a building block for various chemical intermediates.
Is Trimethylolpropane hazardous?
Trimethylolpropane is generally considered safe when handled properly, but it should be stored in a cool, dry place and handled with appropriate protective equipment.
How should Trimethylolpropane be stored?
It should be stored in a cool, dry place, away from incompatible materials and moisture.

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