2-Hydroxypropyl acrylate (HPA), identified by CAS 999-61-1, is a versatile monofunctional monomer characterized by the presence of both a reactive acrylate group and a hydroxyl group. This clear, colorless liquid is highly valued in polymer chemistry for its ability to impart specific functional properties to synthetic resins. Its dual-functional nature allows it to participate in free-radical polymerization while maintaining a pendant hydroxyl site for subsequent chemical modifications or crosslinking reactions.
In industrial settings, HPA is recognized for its solubility in water and various organic solvents, making it a flexible component for diverse formulation types. Due to its tendency to polymerize spontaneously when exposed to heat or light, it is typically stabilized with inhibitors to ensure safety during transport and storage. Handling requires standard safety protocols, as the material is an irritant and requires controlled conditions to prevent premature gelation or degradation.