Trimethylolpropane trimethacrylate

CAS 3290-92-4[H2C=C(CH3)CO2CH2]3CC2H5Chemical Synthesis

Trimethylolpropane trimethacrylate (CAS: 3290-92-4) is a versatile trifunctional acrylate monomer with the chemical formula [H₂C=C(CH₃)CO₂CH₂]₃CC₂H₅ and a molecular weight of 338.40 g/mol. Supplied as technical grade, it is primarily used as a crosslinking agent in polymer synthesis, enhancing the thermal and mechanical properties of various materials. Its polyfunctional nature makes it valuable in coatings, adhesives, and resins.

IUPAC: TMPTMA

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Trimethylolpropane trimethacrylate ([H2C=C(CH3)CO2CH2]3CC2H5) — chemical structure, CAS 3290-92-4; Chemistry, fine chemical supplied by Tech Serve Solutions

Acrylic MonomersBuilding BlocksC12 to C63Carbonyl CompoundsChemical SynthesisEstersMaterials ScienceMonomersOrganic Building BlocksPolyfunctional Acrylics

01 /Applications

Crosslinking Agent

Trimethylolpropane trimethacrylate acts as an effective crosslinking agent in the polymerisation of acrylic systems. It increases the rigidity, thermal stability, and chemical resistance of the resulting polymers, making it suitable for demanding applications.

Resin Modification

Incorporated into resin formulations, this monomer improves properties such as hardness, tensile strength, and heat distortion temperature. It is often used in the production of high-performance composites and engineered plastics.

UV Curable Coatings

The rapid polymerisation of TMPTMA under UV irradiation makes it a key component in UV-curable coatings and inks. It contributes to fast drying times and excellent film properties, including scratch and abrasion resistance.

Adhesives and Sealants

Its ability to form crosslinked networks enhances the cohesive strength and durability of adhesives and sealants. This leads to improved performance in bonding various substrates under challenging conditions.

02 /Properties

Molecular weight	338.40
Linear formula	[H2C=C(CH3)CO2CH2]3CC2H5
Grade	technical grade
Density	1.06 g/mL at 25 °C(lit.)
Refractive index	n20/D 1.472(lit.)
Vapour pressure	<0.01 mmHg (20 °C)
Vapour density	>1 (vs air)
Contains / stabiliser	250 ppm monomethyl ether hydroquinone as inhibitor

03 /Safety & handling

GHS hazard pictogram: Environmental hazard (GHS09) — Environmental hazard

Hazard statements

H411Toxic to aquatic life with long-lasting effects

Precautionary statements

P273Avoid release to the environment

Flash point	>130 °C / >266 °F
Transport (UN / ADR)	UN 3082 9 / PGIII
Water hazard class (WGK, DE)	2
Hazard codes (EU)	N
Risk statements (R)	51/53
Safety statements (S)	61

Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.

04 /Identifiers & registry

CAS number

3290-92-4

MDL number

MFCD00008588

PubChem substance

24854829

05 /Quality & supply

Documentation

Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.

Supply & logistics

Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.

06 /Frequently asked questions

What is Trimethylolpropane trimethacrylate used for?

Trimethylolpropane trimethacrylate is primarily used as a crosslinking agent in polymer synthesis, particularly in UV-curable coatings, resins, adhesives, and sealants, to enhance thermal and mechanical properties.

What is the CAS number and chemical formula for Trimethylolpropane trimethacrylate?

The CAS number is 3290-92-4, and the chemical formula is [H₂C=C(CH₃)CO₂CH₂]₃CC₂H₅.

What grade and purity does Tech Serve Solutions supply?

Tech Serve Solutions supplies Trimethylolpropane trimethacrylate as technical grade. We do not represent this product as USP, BP, or EP grade.

How should Trimethylolpropane trimethacrylate be handled safely?

Trimethylolpropane trimethacrylate is classified as hazardous to the aquatic environment (H411). It may cause skin irritation and allergic skin reaction. Handle with appropriate personal protective equipment in a well-ventilated area. Avoid release to the environment. Consult the Safety Data Sheet for comprehensive safety information.