Description

Trimethylolpropane Triacrylate is a high-purity trifunctional acrylate monomer essential for creating highly cross-linked polymer networks. This compound is valued for its ability to impart excellent hardness, chemical resistance, and fast cure rates to final products. It is a critical raw material for manufacturers in the UV-curable coatings, inks, adhesives, and photopolymer resin industries seeking to enhance product performance and durability.

Application

• UV-Curable Coatings & Inks: A key component in formulations for wood, plastic, and metal coatings, as well as graphic arts and printing inks, enabling rapid curing and superior surface finish.
• Photopolymer Resins: Used in stereolithography (SLA) and other 3D printing resins to create rigid, high-resolution models and prototypes.
• Adhesives & Sealants: Serves as a cross-linking agent in anaerobic and acrylic adhesives, improving bond strength and environmental resistance.
• Optical Fiber Coatings: Employed in primary and secondary coatings to protect glass fibers, providing essential mechanical strength and low attenuation.
• Electronics: Used in solder masks, conformal coatings, and dielectric materials for printed circuit boards (PCBs).
• Dental Composites: A monomer in restorative and prosthetic dental materials, contributing to durability and wear resistance.

Basic Information

Product Name	Trimethylolpropane Triacrylate
CAS No.	15625-89-5
Molecular Formula	C15H20O6
Molecular Weight	296.32 g/mol
Synonyms	TMPTA; 2-Ethyl-2-(((1-oxo-2-propen-1-yl)oxy)methyl)-1,3-propanediyl diacrylate; Trimethylolpropane Triacrylic Ester; 1,1,1-Trimethylolpropane Triacrylate; TMPTMA (common historical misnomer); SR 351; Photomer 4006; NK Ester A-TMPT; Acrylic acid, trimethylolpropane triester
EINECS	239-701-3

Quality Control

Our Trimethylolpropane Triacrylate is manufactured under a stringent quality management system. Every batch undergoes comprehensive analytical testing, including assay, purity, and impurity profile analysis, to ensure it meets exacting industry and customer-specific specifications. Certificates of Analysis (COA) detailing all test results are provided with each shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at temperatures between 15°C and 25°C (59°F and 77°F). This product is easily oxidized; for long-term storage, maintaining an inert atmosphere (e.g., under nitrogen) is recommended to preserve quality and inhibit premature polymerization. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC)	≥ 97.0%
Color (APHA)	≤ 50
Acidity (as acrylic acid)	≤ 0.5%
Water Content (KF)	≤ 0.1%
Inhibitor (MEHQ)	100 - 200 ppm
Viscosity @ 25°C	80 - 120 mPa·s
Specific Gravity @ 25°C	1.10 - 1.12
Refractive Index @ 20°C	1.470 - 1.474

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.