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Overview
2-Hydroxy-4-n-octyloxybenzophenone (UV-531) is a widely used benzophenone-type UV absorber synthesized via Friedel-Crafts acylation. Its molecular formula is C21H26O3 with CAS No. 1843-05-6.
Application
- Polyolefin films and fibers for outdoor durability.
- Acrylic coatings and varnishes requiring high transparency.
- PVC profiles and rigid packaging materials.
Precautions
Store in a cool, dry place away from direct sunlight. Avoid inhalation of dust; wear PPE during handling. Not approved for direct food contact applications in many jurisdictions.