Analysis of High Molecular Weight Hindered Amine Light Stabilizers (HALS) (GF-310 HQ)

Two types of high molecular weight hindered amine light stabilizers (HALS), CHIMASSORB ® 944 and CHIMASSORB ® 2020, as well as TINUVIN ® 791, a mixture of high molecular weight HALS and monomer type HALS, were analyzed by Asahipak GF-310 HQ (an Aqueous/Organic (multi-solvent use) SEC column). Addition of organic amines such as triethylamine in the mobile phase helps the analysis of high molecular weight HALS.


Sample: 0.1 % each, 100 μL
CHIMASSORB ® 944
CHIMASSORB ® 2020
TINUVIN ® 791 

Columns      : Shodex Asahipak GF-310 HQ (7.5 mm I.D. x 300 mm) x 2
Eluent       : 50 mM Triethylamine in DMF
Flow rate    : 0.4 mL/min
Detector     : RI
Column temp. : 50 °C

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