UV Absorber UV-531 for PVC CAS NO.: 1843-05-6
| Chemical name | 2-hydroxy-4-(octyloxy)benzophenone |
| Molecular formula | C21H26O3 |
| Molecular weight | 326 |
| CAS NO. | 1843-05-6 |
Chemical structural formula
Technical index
| Appearance | light yellow crystal powder |
| Content | ≥ 99% |
| Melting Point | 47-49°C |
| Loss on drying | ≤ 0.5% |
| Ash | ≤ 0.1% |
| Light transmittance | 450nm≥90%; 500nm≥95% |
Use
This product is a light stabilizer with good performance, capable of absorbing the UV radiation of 240-340 nm wavelength with the characteristics of light color, nontoxic, good compatibility, small mobility, easy processing etc. It can protect the polymer to its maximum extent, helps to reduce the color. It can also delay the yellowing and obstacle the loss of its physical function. It is widely applied to PE, PVC, PP, PS, PC organic glass, polypropylene fiber, ethylene-vinyl acetate etc. Moreover, it has very good light-stability effect on drying phenol aldehyde, varnish of alcohol and acname, polyurethane, acrylate, expoxnamee etc.
General dosage
Its dosage is 0.1%-0.5%.
1. Polypropylene: 0.2-0.5wt% based on polymer weight
2. PVC
Rigid PVC: 0.5wt% based on polymer weight
Plasticized PVC: 0.5-2 wt% based on polymer weight
3. Polyethylene: 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.