Trimethylolpropane ethoxylate triacrylate
CAS 28961-43-5
EC 500-066-5
Formula (C2H4O)n(C2H4O)n(C2H4O)nC15H20O6
MW 1176 g/mol
Polymers & Resins Coatings, Adhesives, Sealants & ElastomersPlastics & PolymersPrinting & Packaging Polymerization InitiationCross-linking & Curing
Description
Trimethylolpropane ethoxylate triacrylate (CAS 28961-43-5, EC 500-066-5) is a trifunctional acrylate monomer built on an ethoxylated trimethylolpropane core. It is commercially available under trade names including TMP3EOTA, Chemlink 176, and Photomer 4149 TF, and carries no assigned E-code.
In UV-curable coatings and printing inks, it undergoes rapid free-radical photopolymerization upon UV exposure, forming a densely cross-linked network that improves scratch resistance and adhesion. In adhesive and sealant formulations, the ethoxylate spacers increase chain flexibility between cross-link points, allowing formulators to balance cure speed against film elongation.
This material is supplied as a liquid and is registered under REACH for supply within the European Economic Area. Procurement teams should confirm supplier SDS documentation and purity specifications prior to ordering, as grades may vary in ethoxylation degree. Standard packaging formats include drums and IBCs for bulk industrial supply.
In UV-curable coatings and printing inks, it undergoes rapid free-radical photopolymerization upon UV exposure, forming a densely cross-linked network that improves scratch resistance and adhesion. In adhesive and sealant formulations, the ethoxylate spacers increase chain flexibility between cross-link points, allowing formulators to balance cure speed against film elongation.
This material is supplied as a liquid and is registered under REACH for supply within the European Economic Area. Procurement teams should confirm supplier SDS documentation and purity specifications prior to ordering, as grades may vary in ethoxylation degree. Standard packaging formats include drums and IBCs for bulk industrial supply.
Physical Properties
| Boiling Point | 157 °C(lit.) |
| Density | 1.110 g/cm³ |
| Flash Point | >230 °F |
| Color | Colorless to light yellow |
| Form | Liquid |
| Water Solubility | 880mg/L at 20℃ |
| Vapor Pressure | 0Pa at 25℃ |
| Refractive Index | n 20/D 1.471(lit.) |
| Log P | 2.89 at 23℃ |
Safety & Handling (Learn More)
Warning GHS07
H
H319
P
P280P264+P265P337+P317P305+P351+P338
Trade & Regulatory
| UN Number | 3334 |
| Storage Class | 10 - Combustible liquids |
| WGK (Germany) | 3 |
Other Names
EO-TMPTATMP3EOTAChemlink 176Photomer 4149 TFEthoxylated trimethytrimethylolpropaneethoxytriacrylateTrimethylolpropane [3 EO] triacrylateTRIMETHYLOLPROPANE TRIETHOXY TRIACRYLATE
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Raw Materials
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