Benzoyl isopropanol

Benzoyl isopropanol (CAS 7473-98-5), also known as HMPP and 2-Hydroxy-2-methylpropiophenone, is a photoinitiator that triggers free-radical polymerization upon UV exposure.

Where is Benzoyl isopropanol used?

• Coatings and industrial varnishes: crosslinking initiator under UV light
• Adhesives and sealants: UV-cure for optical, electronics and label applications
• Printing inks: fast-cure flexographic and screen-printing systems
• Nail gel systems: UV-curable performance
• It enables rapid, solvent-free cure cycles with minimal thermal input.

Good to know: Controlled cure depth and compatibility with acrylate monomers determine its effectiveness. Low yellowing properties are essential for coatings and inks.

Commercial specifications

• Packaging from drum quantities to IBC; bulk and smaller formulation-development quantities