Description

2-Ethyl-2-(Hydroxymethyl)-1,3-Propanediyl Bismethacrylate is a high-purity, difunctional methacrylate monomer, also known as trimethylolpropane dimethacrylate (TMPTMA). This compound is valued for its ability to form highly cross-linked, durable polymer networks, offering excellent hardness, chemical resistance, and thermal stability. It is a critical raw material for manufacturers in the coatings, adhesives, dental materials, and advanced composites industries seeking to enhance product performance.

Application

• UV-Curable Coatings & Inks: A key cross-linking agent for formulating hard, scratch-resistant, and glossy finishes on plastics, wood, and metal.
• Dental Composites & Restoratives: Used as a co-monomer to create strong, durable, and biocompatible dental filling materials and prosthetics.
• Adhesives & Sealants: Imparts high cohesive strength and environmental resistance in anaerobic, acrylic, and structural adhesives.
• Fiber-Reinforced Plastics (FRP): Serves as a reactive diluent and cross-linker in unsaturated polyester resins for automotive parts and marine components.
• Photoresists & Electronics: Employed in the production of photopolymerizable resins for printed circuit boards (PCBs) and microelectronics.
• Acrylic Sheet & Casting Resins: Enhances the hardness and heat deflection temperature of cast acrylic products.

Basic Information

Product Name	2-Ethyl-2-(Hydroxymethyl)-1,3-Propanediyl Bismethacrylate
CAS No.	19727-16-3
Molecular Formula	C15H22O6
Molecular Weight	298.33 g/mol
Synonyms	Trimethylolpropane Trimethacrylate (TMPTMA); 1,1,1-Trimethylolpropane Trimethacrylate; 2-Ethyl-2-(hydroxymethyl)-1,3-propanediol trimethacrylate; TMPTMA; Ethoxylated Trimethylolpropane Trimethacrylate (EO-TMPTMA); SR 350; NK Ester TMPT; Crosslinking agent TMPTMA
EINECS	243-258-5

Quality Control

Our 2-Ethyl-2-(Hydroxymethyl)-1,3-Propanediyl Bismethacrylate is manufactured under a strict quality management system. Each batch is analyzed to ensure it meets precise specifications for purity, color, and acid value. A Certificate of Analysis (COA) detailing key parameters is provided with every shipment to guarantee consistency and support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at temperatures between 15-25°C (59-77°F). This product is light-sensitive and easily oxidized; prolonged exposure to air, heat, or light should be avoided to maintain stability and prevent premature polymerization. Keep away from heat sources and incompatible materials.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms
Purity (GC)	≥ 97.0%
Color (APHA)	≤ 50
Acid Value (mg KOH/g)	≤ 0.5
Water Content (KF)	≤ 0.1%
Refractive Index (n20D)	1.468 - 1.472
Density (g/mL, 20°C)	1.060 - 1.070

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