Chemical name:  Bis (1,2,2,6,6-pentamethyl-4-piperidinyl)-[[3,5-bis(1,1-dimethylethyl)-4- hydroxyphenyl]methyl]butylmalonate CAS No.: 63843-89-0                    Molecular formula:  C42H72N2O5 Molecular weight：685.04                                                                                                     Appearance: White to slightly yellow powder   Assay, %: ≥98 Melting point, ℃: ≥144  Loss on Drying, %: ≤0.5 Transmittance: 460nm ≥ 95% 500nm ≥ 97%                                                                LIGHT STABILIZER LS-144 is a light stabilizer of the hindered amine class (HALS) and also contains an antioxidant moiety of the sterically hindered phenol type. Its efficiency provides significantly extended life time to coatings by minimizing paint defects such as cracking and loss of gloss. It is recommended for applications including automotive coatings, coil coatings, and powder coatings. The performance of 144 can be significantly improved when used in combination with a UV absorber like UV1130, UV928 etc.  info at hhochem. com