UV absorber UV-326 CAS NO.: 3896-11-5
| Chemical name | 2-(2′-hydroxide-3′- tertiary butyl–5′-methylphenyl)-5 -chloro-2H-benzotriazole |
| Molecular formula | C17H18N3OCL |
| Molecular weight | 315.5 |
| CAS NO. | 3896-11-5 |
Chemical structural formula
Technical index
| Appearance | light yellow small crystal |
| Content | ≥ 99% |
| Melting point | 137~141°C |
| Loss on drying | ≤ 0.5% |
| Ash | ≤ 0.1% |
| Light transmittance | 460nm≥97%; 500nm≥98% |
Use
Max absorption wave length range is 270-380nm.
It mainly used to polyvinyl chloride, polystyrene, unsaturated resin, polycarbonate, poly (methyl methacrylate), polyethylene, ABS resin, epoxy resin and cellulose resin etc.
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.
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