Home >> UV/Light Stabilizer for Plastics >> Tiangang® HS-200A

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
StructureTiangang® HS-508
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.