UV Absorber UV-326

Chemical Name: 2-(3-tert-Butyl-2-hydroxy-5-methylphenyl)-5-chloro-2H-benzotriazole CAS NO.:3896-11-5 Molecular Formula：C17H18N3OCl Molecular Weight：315.5 Specification Appearance: light yellow small crystal Content: ≥ 99% Melting point: 137~141°C Loss on drying: ≤ 0.5% Ash: ≤ 0.1% Light transmittance: 460nm≥97%; 500nm≥98% Application Max absorption wave length range is 270-380nm. It mainly used to polyvinyl chloride, polystyrene, unsaturated resin, polycarbonate, poly (methyl methacrylate), polyethylene, ABS resin, epoxy resin and cellulose resin etc. Usage: 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 Package and Storage 1. 25kg carton 2. Stored in sealed, dry and dark conditions