Trimethylolpropane trimethacrylate

Also known as: TMPTMA, 2,2-Bis(methacryloyloxymethyl)butyl methacrylate, 2,2-Bis[(methacryloyloxy)methyl]butyl methacrylate, 2,2-bis(hydroxymethyl)butanol trimethacrylate, 2-Ethyl-2-hydroxymethyl-1,3-propanediol trimethacrylate, Methacrylic acid, triester with 2-ethyl-2-(hydroxymethyl)-1,3-propanediol, SR350, Saret515, blemmerptt, chemlink30, chemlink3080, hi-crossm, lightestertmp, monocizertd1500, nkestertmpt, td1500, td1500s, atm11, trimethylol propane trimethacrylate

Trimethylolpropane trimethacrylate (CAS 3290-92-4) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C18H26O6 and a molecular weight of 338.395 g/mol. Key properties include a melting point of -25°C, a boiling point of 422.1±25.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 181.4±23.2 °C. GHS hazard statements: H411 — Toxic to aquatic life with long lasting effects. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 3290-92-4
Jingsj CID: J-1990679-7
Molecular Formula: C₁₈H₂₆O₆
Molecular Weight: 338.395 g/mol
Category: Organic Acids
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	-25°C
Boiling Point	422.1±25.0 °C at 760 mmHg
Density	1.1±0.1 g/cm3
Flash Point	181.4±23.2 °C
Exact Mass	338.172943
PSA	78.90000
LogP	3.15
Additional Property	>1 (vs air)
Vapor Pressure	0.0±1.0 mmHg at 25°C
Refractive Index	1.470

GHS Safety & Compliance

Environmental Hazard

H411 — Toxic to aquatic life with long lasting effects

Customs & Trade Information

HS Code	2916190090
Summary	2916190090 unsaturated acyclic monocarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives。supervision conditions:AB(certificate of inspection for goods inward,certificate of inspection for goods outward)。VAT:17.0%。tax rebate rate:9.0%。MFN tariff:6.5%。general tariff:30.0%

Frequently Asked Questions

What is the CAS number of Trimethylolpropane trimethacrylate?

The CAS number of Trimethylolpropane trimethacrylate is 3290-92-4.

What are the molecular formula and molecular weight of Trimethylolpropane trimethacrylate?

Trimethylolpropane trimethacrylate has molecular formula C18H26O6 and molecular weight 338.395 g/mol.

Is Trimethylolpropane trimethacrylate hazardous?

Trimethylolpropane trimethacrylate has GHS hazard statements H411 — Toxic to aquatic life with long lasting effects.

What are the upstream and downstream products of Trimethylolpropane trimethacrylate?

For Trimethylolpropane trimethacrylate, Upstream Products: Trimethylolpropane, Methyl methacrylate.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 8/21/2026

How to cite: Jingsj. "Trimethylolpropane trimethacrylate (CAS 3290-92-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1990679-7 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.