Kowa American Corporation


4-hydroxybutyl acrylate

4HBA has a primary hydroxyl group at the end of a longer alkyl chain which allows it to be used in UV curable formulations and improves flexibility. This can also be used to make specialty acrylic polyols.

Compared with HEA, we recommend this as an alternative in UV coatings because of the lower toxicity, corrosiveness, and volatility of 4HBA.


Purity(GC) 97% min
Color(APHA) 50 max
Water Content 0.5% max

Chemical Structure

Chemical Structure


CAS#: 2478-10-6

EINECS#: 219-606-3


  • Low Toxicity
  • Flexibility
  • Low Volatility


  • Adhesives
  • Automotive coatings
  • Paint & Coatings-Waterborne
  • Plastics & Other Flexible Substrates Coatings
  • UV Cure Coatings
  • UV Cured Systems
  • UV Inkjet Inks