1. Chemical name: 2 - (2 '- hydroxy – 5' - methylphenyl) benzotriazole
2. Molecular formula: C13H11N3O
3. Molecular weight: 225.3
4、CAS NO. : 2440-22-4
5. Chemical structural formula:
6. Appearance: white to light yellow crystalline powder
7. Content: ≥ 99%
8. Melting point: 12 8-131 ° C
9. Volatile matter: ≤ 0.5%
10. Ash content: ≤ 0.1%
11. Light transmittance:
Wavelength NM  | Light transmittance%  | 
440  | ≥ 97  | 
500  | ≥ 98  |