UV Absorber UV-327 CAS NO.: 3864-99-1

Chemical name: 2-(3′,5′-di-tert-Butyl-2′-hydroxyphenyl)-5-chloro-2H-benzotriazole
Molecular formula: C₂₀H₂₄N₃OCL
Molecular weight: 357.9
CAS NO.: 3864-99-1
Chemical structural formula:

Appearance: light yellow powder
Content: ≥ 99%
Melting point: 154-158°C
Loss on drying: ≤ 0.5%
Ash: ≤ 0.1%
Light transmittance:

Toxicity: low toxicity,rattus norvegicus oral LD50 =5g/Kg weight.

Application：

This product is suitable in Polyolefine, Polyvinyl chloride, organic glass and others. Max absorption wave length range is 270-400nm.

General dosage:.

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 and Storage:

Package: 25KG/CARTON

Storage: Stable in property, keep ventilation and away from water and high temperature.