Chemical name: 2-(2'-Hydroxy-3',5'-di-tert- Butyl Phenyl)-5-Chlorobenzotriazole

Chemical formula: C20H34N3OCL

Molecular weight: 357.89

CAS no.: 3864-99-1

Product standard: Q/12 HG 3557-2000

Physical properties:

Appearance: light yellow powder（diffierent style with different appearance）

Melting point: 154-158°C

Ash content: 0.05% max.

Loss on heating: 0.05% max.

Light transmittance: 460nm/88mins or 500nm/95mins