UV 531, Chimassorb 81
Chemical Name:
2-Hydroxy-4-n-octoxybenzophenone
| Formula | C21H26O3 |  |
| Molecular Weight | 326 | |
| CAS# | 1843-05-6 |
Specification:
| Appearance | slightly yellow powder | |
| Melting point | 47-49℃ | |
| boiling point | > 300°C | |
| Solubility（20℃） | Water | < 0.01 |
| MeoH | 2 | |
| EtoH | 2 | |
| Acetone | 70 | |
| Ch2Cl2 | 67 | |
| Hexane | 25 | |
Application:
>Features: Low yellowing; Good absorbance in the UV-B region; improves failure of coatings resulting from exposure to sunlight including discoloration, cracking and loss of adhesion.
>531 is a UV absorber for plasticized and rigid PVC, polyester, PS, Acrylate resins, vinyl ester based coatings, PU based coatings, alkyed resin coatings, improves the weather resistance of the coating.
>Its performance in outdoor applications can be improved further by use in synergistic combination with a hindered amine light stabilizer (HALS) such as HALS 292.
>The amount of UV 531 required for optimum performance should be determined in trials covering a concentration range.
Handing and Safety:
>FDA approves, under the 21CFR178.2010 for use in aqueous foods, dairy products (water-in-oil emulsions), bakery products without oil, and dry foods without oil at a maximum concentration of 0.5%.
>For additional handing and toxicological information, please consult us for Maternal Safety Date Sheet.
Package:
25kg per fiber drum, 9*3 layer 27drum per pallet,or according to customers’ requirements.