A: components:

2-(2'-p – 3',5'-di-tert-butylphenyl) phenyl BENZOTRIAZOLE

Second, product description:

UV-320 is a high performance optical stabilizer, widely used in plastics and other organic compounds, including unsaturated polyester, PVC,PVC increase in plastic, polyurethane, polyamide, synthetic fibres, especially the application of polyester, epoxy resin, UV-320 effects appear more prominent, UV-320 has a strong ability to absorb UV light, volatile low features. It can effectively protect organic pigments and polyester from UV radiation, protecting objects, films in an open state of the original physical appearance.

Third, the molecular formula: C20H25N3O

Four, molecular weight: 323.4

Five, CAS NO.:3846-71-7

Six, the chemical structural formula:

Seven-, sales code: PS-320

Eight technical specifications:

Appearance: light yellow powder

Content: ≥ 99%

Melting point: 152-154 c

Loss on drying: ¡ü 0.5%

Ash content: ≤ 0.1%

Light transmittance: 440nm ≥ 97%

500nm≥98%

Toxicity: low toxicity, rat oral LD 50 >2g/Kg weight.