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Tiangang® HS-508
Liquid High Effectiveness Hindered Amine light stabilizer (HALS)
| Chemical name | Mixture of bis(1,2,2,6,6-pentamethyl-4-piperidinyl) sebacate and methyl(1,2,2,6,6-pentamethyl-4-piperidinyl) sebacate |
| CAS number | 41556-26-7 / 82919-37-7 |
| Structure |  |
| Description | Tiangang® HS-508 is a highly effective radical scavenger belonging to the Hindered Amine Light Stabilizers (HALS) family of stabilizers. It is a liquid HALS that displays outstanding light stabilities in applications, like coatings, printing ink, and polyurethane lacquer, preventing the surface from blowing-out or peeling-off. It is widely used for light stability in polypropylene, polyethylene, styrenics, unsaturated polyester, acrylics, vinyl polymers (PVC, PVB), including plastisols, elastomers, adhesives, sealants and coatings. In particular, it is often recommended for polyurethanes because of its solubility in polyols. Tiangang® HS-508 (292) typically demonstrates reduced interaction with co-additives such as pigments or other stabilizers. Tiangang® HS-508 (292) has strong synergy effect with UV absorbent of benzotriazo family, particularly when used in coatings for automotives and wooden furniture. |
Typical properties
| Tiangang® HS-508 | Appearance | Active content | Ash | Specific gravity g/ml |
| Clear, colorless liquid | >=97% | <=0.10% | 0.99 |
Solubility @ 25oC (g/100 ml solvent)
| Tiangang® HS-508 | Water | Styrene | Acetone | Cyclohexane | Isopropyl alcohol | Hexane | Toluene | Xylene |
| 0.001 | 110 | 340 | 110 | 238 | 230 | 327 | 268 |
Safety & handling
| Tiangang® HS-508 | 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
