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Tiangang® UV-531
Benzophenone UV Absorber (BPO UVA)
| Chemical name | 2-Hydroxy-4-n-octoxybenzophenone |
| CAS number | 1843-05-6 |
| Structure |  |
| Formula | C21H26O3 |
| Description | Tiangang® UV-531 is a Benzophenone type of UV absorber which imparts good light stability when used in combination with a Tiangang® HALS. It is compatible with most polyolefins, engineering plastics and PVC, and can be used to protect the polymer from degradation caused by light exposure. It can be used in combination with antioxidants, phosphites, and light stabilizers. Recommended dosing level is 0.1~0.5% based on polymer weight. |
Typical properties
| Appearance | Molecular Weight |
Melting range oC |
Flash point oC | |
| Tiangang® UV-531 | Slightly yellow powder | 326 | 48 ~ 49 | > 200 |
Solubility @ 20oC (g/100 ml solvent)
| Tiangang® UV-531 | Acetone | Chloroform | Ethanol | n-Hexane | Methanol | Toluene | Water |
| 43 | > 50 | 3.5 | 12 | 2 | > 50 | < 0.01 |
Safety & handling
| Tiangang® UV-531 | The use of proper protective equipment is recommended. Excess exposure to the product should be avoided. Wash thoroughly after handling. Store the product in a cool, dry, well-ventilated area away from incompatible materials. |
| Disclaimer | The information supplied is presented in good faith and has been derived from sources believed to be reliable. Since conditions of use are beyond our control, all risks are assumed by the user. No representation is expressed or implied, and nothing herein shall be construed as permission or recommendation to practice a patented invention without license. |
Light Stabilizer for Plastics
Light Stabilizer for Coatings
