1. Acts UV-327  as a high-efficiency UV absorber in polyolefin, PVC and engineering plastics, effectively blocking 270-380nm UV rays to prevent polymer aging and cracking.

2. Serves UV-327 CAS 3864-99-1 as a light stabilizer in coatings and adhesives, stably improving the weather resistance and gloss retention of outdoor industrial and architectural coatings.

3. Functions as a UV protector in synthetic fibers, reliably enhancing the light fastness of PP/PE fibers and preventing fading during outdoor use.

Store UV-327 CAS 3864-99-1 (CAS 3864-99-1, pale yellow crystalline powder, mp 150-152℃, density 1.20g/cm³, purity ≥99%) at 5–30℃ in sealed amber glass/HDPE containers in a cool, dry, dark and well-ventilated area. Isolate from strong oxidants, acids and direct sunlight to avoid degradation and discoloration. Wear nitrile gloves, safety goggles and dust mask; avoid dust inhalation, skin/eye contact and ingestion to prevent mild irritation. Reseal tightly post-use; dispose of waste per local polymer additive & UV stabilizer environmental regulations.

UV-327 is an industrial benzotriazole UV absorber, not for direct pure-form human contact or ingestion; undiluted contact may cause mild skin and mucosal irritation. In regulated applications, UV-327 CAS 3864-99-1 features a broad UV absorption range, excellent thermal stability and low volatility, good compatibility with most polymers, remarkable anti-aging effects at low dosage, and compliance with food-contact material safety standards.