2-Hydroxy-4-n-octoxybenzophenone
PowerSorb™ 531 is an ultraviolet light absorber (UVA) of the benzophenone class. It is effective in polyolefins, including low and high density polyethylene, polypropylene, olefin copolymers (EPR, EPDM, EVA), and other polymers including polyvinyl chloride, polyesters, natural and synthetic resins, polystyrene and ABS.
| Synonyms | Chimassorb 81, Uvinul 3008, Songsorb 8100 pw fc, Cyasorb UV-531, Lowilite 22, Hostavin ARO 8, Eversorb 12, EVERSTAB 531. |
CAS Number | 1843-05-6 |
EINECS Number | 217-421-2 |
Chemical Structure |
|
Chemical Formula | C21H26O3 |
Molecular Weight | 326 |
Packing | PowerSorb™ 531 is supplied in 20Kg Paper Bag, 20Kg PE Bag, 25Kg Carton Box, and 50Kg Fiber Drum. |
Note | All information in the leaflet is based on our present knowledge and experience. We reserve the right to make any changes according to technological progress or further developments. Performance of the product described herein should be verified by testing. We specifically disclaim any other express or implied warranty of fitness for a particular purpose or merchantability. We disclaim liability for any incidental or consequential damages. |
PowerSorb™ 531 exhibits synergy with HALS.
PowerSorb™ 531 has excellent solubility and compatibility with high solid coatings formulations.
PowerSorb™ 531 can be used for PE, PP, PVC, PS, PC, PP fiber, Ethylene vinyl acetate etc.
PowerSorb™ 531 provides good light stability effect Paints, Powder coatings, Polyurethanes, rubbers.
PowerSorb™ 531 is recommended in PE, PP, and PVC etc.
PowerSorb™ 531 can be used in combination with antioxidants, phosphites and other light stabilizers.
Appearance | Slightly Yellow Powder / Flakes |
Melting Point (°C) | Min.47 |
Volatile Loss (%) | Max.0.3 |
Color of Solution 460nm (%) | Min.95 |
Color of Solution 500nm (%) | Min.97 |
Ash (%) | Max.0.1 |
Purity (%) | Min.99 |
Solubility [20°C] | % w/w |
Acetone | 43 |
Chloroform | 61 |
Ethanol | 3.5 |
Ethyl acetate | 44 |
n-Hexane | 12 |
Methanol | 1.7 |
Dichloromethane | 67 |
Toluene | >50 |
Water | <0.01 |
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PowerSorb 531 Benzophenone UV Absorber 1843 05 6 
