UV Absorber UV-P CAS NO.: 2440-22-4
| Chemical name | 2-(2′-Hydroxy-5′-methylphenyl)benzotriazole |
| Molecular formula | C13H11N3O |
| Molecular weight | 225.3 |
| CAS NO. | 2440-22-4 |
Chemical structural formula
Technical index
| Appearance | White to light yellow crystal powder |
| Content | ≥ 99% |
| Melting point | 128-130 °C |
| Loss on drying | ≤ 0.5% |
| Ash | ≤ 0.1% |
| Light transmittance | 450nm≥90%; 500nm≥95% |
Use
This product provides ultraviolet protection in a wide variety of polymers including styrene homo- and copolymers, engineering plastics such as polyesters and acrylic resins, polyvinyl chloride, and other halogen containing polymers and copolymers (e.g. vinylidenes), acetals and cellulose esters. Elastomers, adhesives, polycarbonate blends, polyurethanes, and some cellulose esters and epoxy materials.
General dosage: thin products: 0.1-0.5% , thick products: 0.05-0.2%.
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.