Chemical name : 2- (2'-Hydroxy-5'-tert-octylphenyl)benzotriazole
Introduction: UV-329 is a benzotriazole type ultraviolet light absorber (UVA), imparting good light stability for plastics and other organic polymers. It is an effective light stabilizer for a variety of plastics and other organic substrates.
Molecular formula: C20H25N3O
CAS NO : 3147-75-9
Appearance : white powder
Melting Range : 103-105 °C
Transmittance (%) : 440nm≥97 500nm≥98
1. Unsaturated Polyester : 0.2-0.5wt% based on polymer weight
2.PVC: Rigid PVC : 0.2-0.5wt% based on polymer weight
Plasticized PVC : 0.1-0.3wt% based on polymer weight
3.Polyurethane : 0.2-1.0wt% based on polymer weight
4.Polyamide : 0.2-0.5wt% based on polymer weight
Packing:UV-329 is available in powder form in a 20 kg (44.1 LB) fiber drum, net weight, with an inner PE liner.