Description

Acrylic Acid 2-Hydroxy-2-Methylpropyl Ester is a high-purity, reactive monomer essential for creating advanced polymer networks. This compound matters for its ability to introduce hydroxyl functionality and cross-linking sites into acrylic polymers, significantly enhancing adhesion, chemical resistance, and durability. Industrial formulators and polymer chemists need it for producing high-performance coatings, adhesives, and specialty resins where enhanced mechanical properties and environmental stability are critical.

Application

• UV-Curable Coatings & Inks: A key reactive diluent and cross-linker in formulations for wood, plastic, and metal coatings, offering fast cure and excellent surface hardness.
• Adhesives & Sealants: Used to synthesize acrylic polyols for polyurethane adhesives, improving flexibility, bond strength, and moisture resistance.
• Acrylic Resin Modification: Serves as a co-monomer to introduce pendant hydroxyl groups, facilitating subsequent reactions with isocyanates or melamines for thermoset coatings.
• Fiber Optic Coatings: Employed in the production of primary and secondary coatings to protect glass fibers, providing essential toughness and environmental protection.
• Dental & Medical Polymers: A component in light-curable composites and restorative materials due to its biocompatibility and ability to form durable polymer matrices.
• Photoresists & Electronic Materials: Used in the synthesis of polymers for photolithography, contributing to precise patterning in microelectronics fabrication.

Basic Information

Item	Detail
Product Name	Acrylic Acid 2-Hydroxy-2-Methylpropyl Ester
CAS No.	23261-56-5
Molecular Formula	C7H12O3
Molecular Weight	144.17 g/mol
Synonyms	2-Hydroxy-2-methylpropyl acrylate; Hydroxypropyl Methacrylate Isomer; HPA; 2-Hydroxyisobutyl Acrylate; 1,1-Dimethyl-2-hydroxyethyl acrylate; Acrylic acid, 2-hydroxy-1,1-dimethylethyl ester; β-Hydroxyisobutyl acrylate; Acrylic Acid Hydroxy-tert-butyl Ester
EINECS	245-545-1

Quality Control

Our Acrylic Acid 2-Hydroxy-2-Methylpropyl Ester is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing, including assay, purity profiling, and impurity quantification, to ensure it meets precise customer and industry specifications. Certificates of Analysis (COA) documenting all critical parameters are available upon request to 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 room temperature (15-25°C/59-77°F). Keep away from heat, sparks, and open flame. Due to its nature as a strong acid/organic solvent, store separately from oxidizing agents, bases, and amines. Use appropriate corrosion-resistant materials for handling and storage.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC)	≥ 98.0 %
Water Content (KF)	≤ 0.5 %
Acidity (as Acrylic Acid)	≤ 0.5 %
Color (APHA)	≤ 50
Specific Gravity (20°C)	1.050 - 1.070
Refractive Index (20°C)	1.440 - 1.445

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