UV Absorber UV-327

Chemical Name: 2-(3',5'-di-tert-Butyl-2'-hydroxyphenyl)-5-chloro-2H-benzotriazole CAS NO.:3864-99-1 Molecular Formula：C20H24ClN3O Molecular Weight：357.9 Specification Appearance: light yellow powder Content: ≥ 99% Melting point: 154-158°C Loss on drying: ≤ 0.5% Ash: ≤ 0.1% Light transmittance: 440nm ≥ 97%, 500nm ≥ 98% Application This product is suitable in Polyolefine, Polyvinyl chloride, organic glass and others. Max absorption wave length range is 270-400nm. Toxicity: low toxicity,rattus norvegicus oral LD50 =5g/Kg weight. 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