Sodium alkyl sulfates were analyzed using Asahipak GF-310 HQ (an Aqueous/Organic (multi-solvent use) SEC column). Since sodium alkyl sulfates have no UV absorption, an RI detector should be used for the detection.


Sample : 0.5 %, 20 μL
1. Sodium decyl sulfate
2. Sodium lauryl sulfate

Column       : Shodex Asahipak GF-310 HQ (7.5 mm I.D. x 300 mm)
Eluent       : 50 mM NaNO3 aq./CH3CN=50/50
Flow rate    : 0.6 mL/min 
Detector     : RI
Column temp. : 40 °C