Description

Pentaerythritol Tetramethylacrylate is a tetrafunctional acrylate monomer characterized by its four reactive methacrylate groups. This compound is a critical building block in the synthesis of highly cross-linked polymers, offering superior hardness, chemical resistance, and thermal stability to the final materials. It is essential for manufacturers in the coatings, adhesives, and advanced resin industries seeking to enhance product performance and durability.

Application

• UV-Curable Coatings and Inks: Serves as a key cross-linking agent to create hard, scratch-resistant, and glossy finishes for wood, plastic, and metal substrates.
• Dental and Medical Resins: Used in the formulation of high-strength, biocompatible composite materials for restorative dentistry and bone cements.
• Optical Lenses and Fiber Optics: A critical component in the production of transparent, high-refractive-index polymers with excellent clarity and dimensional stability.
• Adhesives and Sealants: Imparts strong adhesion and resistance to environmental factors in industrial and electronic-grade adhesive formulations.
• Lithographic Printing Plates: Acts as a photopolymerizable cross-linker, contributing to the plate's durability and image resolution.
• 3D Printing Resins (SLA/DLP): Enhances the mechanical properties and cure speed of resins used in stereolithography and digital light processing.

Basic Information

Product Name	Pentaerythritol Tetramethylacrylate
CAS No.	118541-94-9
Molecular Formula	C21H28O8
Molecular Weight	408.45 g/mol
Synonyms	Pentaerythritol Tetraacrylate (common name); PETMA; Pentaerythritol Tetramethacrylate; 2-Propenoic acid, 2-methyl-, 1,1'-[2,2-bis[[(2-methyl-1-oxo-2-propen-1-yl)oxy]methyl]-1,3-propanediyl] ester; Tetramethylolmethane Tetramethacrylate; Pentaerythrityl Tetramethacrylate; Pentaerythritol Tetramethacrylate Monomer; PETA (often used interchangeably, though technically different)
EINECS	Contact for details

Quality Control

Our Pentaerythritol Tetramethylacrylate is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing, including assay, impurity profiling, and stability checks, to ensure it meets precise specifications for polymerization-grade monomers. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and physical properties is provided with every shipment to guarantee batch-to-batch consistency and performance reliability.

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). Keep away from heat, sparks, and open flame. Due to its reactivity, store separately from strong acids, bases, and oxidizing agents. For long-term storage under an inert atmosphere such as nitrogen, please contact our technical team for specific recommendations.

Specification

Item	Specification
Appearance	Clear, Colorless to Pale Yellow Liquid
Identification (IR)	Conforms to Standard
Assay (HPLC)	≥ 97.0%
Color (APHA)	≤ 100
Acid Value	≤ 1.0 mg KOH/g
Water Content (KF)	≤ 0.1%
Inhibitor (MEHQ)	100 - 200 ppm
Viscosity (25°C)	Contact for details
Refractive Index (n20D)	Contact for details

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