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2-hydroxypropyl methacrylate

CAS Number
923-26-2
EC Number
213-090-3
Chemical Formula
C7H12O3
Molecular Weight
144.17 g/mol

Description

2-Hydroxypropyl methacrylate (CAS 923-26-2 ), also known as HPMA or propylene glycol monomethacrylate, is a reactive hydroxyl-functional monomer used to introduce pendant hydroxyl groups into acrylic polymer chains. It enables controlled crosslinking and adhesion performance across a broad range of polymer systems. In coatings formulations, HPMA reacts with isocyanate or melamine crosslinkers to produce two-component polyurethane. These acrylic topcoats offer improved hardness and chemical resistance. Adhesive and sealant manufacturers incorporate it to build hydroxyl-functional acrylic backbones that bond well to metal, glass, and plastic substrates. In UV-curable printing inks and packaging coatings, it functions as a reactive diluent that reduces viscosity while contributing to cure speed and film flexibility for various industrial applications. Plastics producers use it as a comonomer to tailor the glass transition temperature and surface functionality of acrylic resins for specialty applications requiring specific performance characteristics. This chemical is supplied as a clear liquid, typically in inhibited form to prevent premature polymerization during storage and transport. Technical grade is the standard commercial offering for most buyers. Purity levels are commonly at 97% or higher for industrial use. Bulk quantities are available in drums and IBC totes, with tank truck supply accessible for high-volume buyers in the chemical sector. Contact us for supply of 2-hydroxypropyl methacrylate Request Quote

Other Names (Synonyms)

propylene glycol monomethacrylate | methacrylic acid 2-hydroxypropyl ester | HPMA | beta-Hydroxypropyl methacrylate | 2HPMA | 2-Hydroxypropyl 2-methylacrylate | 2-Hydroxypropyl 2-methyl-2-propenoate | 2-hydroxy-n-propyl methacrylate

Key Technical Features

  • High Purity Grade standard
  • Consistent Batch Quality
  • Full Regulatory & REACH Support
  • Global Logistics Network enabled

Physical Properties

Melting Point<25 °C
Boiling Point57 °C @ Press: 0.5 Torr
Density1.03
Flash Point101 °C
AppearanceClear liquid
Refractive Index1.447-1.449

Safety & Handling

Warning
GHS07· Irritant