The Separation of Sodium, Dioctylsulfosuccinic Acid, and Sulfosuccinic Acid
Sulfosuccinic acid and the corresponding dioctyl ester were separated on the Primesep B4 short carbon-chain anion-exchange column. Short carbon chain stationary phase allows to elute hydrophobic and acidic diester in reasonable time. No elution was observed on the mixed-mode columns with longer carbon chain analogs due to very strong hydrophobic and anion-exchange interaction.
Methodenparameter
| Column | Primesep B4, 3.2×50 mm, 5 µm, 100 Å |
|---|---|
| Mobile Phase | Gradient MeCN – 10 -50%, 10 min |
| Buffer | Gradient AmFm pH 3.0- 60-180 mM, 10 min |
| Flow Rate | 1.0 mL/min |
| Detection | ELSD, 50C |