Sodium Alkyl Sulfates

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%, 20μL
1. Sodium decyl sulfate
2. Sodium lauryl sulfate

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