UV 328, Tinuvin 328, CAS 25973-55-1
Chemical Name:
2-(2′-Hydroxy-3′, 5′-di-tert-amylphenyl) benzotriazole
| Formula | C22H29N3O |  |
| Molecular Weight | 351.5 | |
| CAS# | 25973-55-1 |
Synonyms
uv absorber 328, tinuvin 328,
Physical Properties:
| Appearance | Yellowish powder or granule |
| Melting Point | 79-87℃ |
| Ash | ≤0.1% |
| Loss On Drying | ≤0.5% |
| Purity | ≥99%(HPLC) |
| Transmittance | 460nm≥96% 500 nm≥97% |
Applications:
UV 328 is a high-performance UV absorber that can effectively absorb 270-340 nm UV light. Its performance is similar to that of UV-326 and UV-327 while better compatibility with the resin, low thermal evaporation and high washing resistance. Tinuvin 328 is suitable for polyolefin (especially polyethylene), polyester, styrene polymer, polyamide, polymethyl methacrylate, polycarbonate, elastomer and other polymers.
Recommended dosage: PS 0.2-0.5%, PE 0.2-0.4%, PC 0.15-0.3%, PVC 0.2-0.5%, Polyester 0.3-0.5%.
Handing and safety:
>For additional handing and toxicological information, please consult us for Maternal Safety Date Sheet.
Package:
20/25KG cartons or drums.