UV ABSORBER: UV-327

Chemical name	2-(2'-Hydroxy -3' ,5'-ditert-butylphenyl)-5-chloro benzotriazole
CAS NO.	3864-99-1
Against	Tinuvin 327
Introduction	UV-327 is a benzotriazole type UV absorber. It has a high and absorption in the wavelength of 300-400nm. UV-327 is also effective in polyethylene, unsaturated polyester, polypropylene and polycarbonate.
Physical properties	Molecular Weight: 357.5 Appearance: slightly yellowish powder Melting Point: 154 -157 ? Transmittance: 460nm: 93% min 500nm: 96% min Ash Content: 0.3% max
Advantage	• Odorless, does not bring smells to the polymers. • Excellent stability to heat. • Low volatility during high processing temperature. • Good extraction resistance.
Applications	• Polyethylene: 0.2-0.4wt% based on solids. • Polypropylene: 0.3-0.5wt% for rigid PVC based on solids. • Styrenic Polymers: 0.2-0.5wt% for PS based on solids. 0.5-2.0wt% for ABS based on solids. • Unsturated Polyester: 0.2-0.4wt% for PS based on solids.
Toxicity & Safety	UV-327 can be safely handled without irritation caused to the skin.
Package	In 25 kg carton drum with inner plastic bag.
Storage	In a closed system and dry , dark place without any light exposure.