HPLC Method for 1,5-Naphthalenedisulfonic Acid on Newcrom B by SIELC Technologies
| Column | Newcrom B, 3.2 x 100 mm, 5 µm, 100 A, dual ended |
| Mobile Phase | MeCN/H2O – 50/50% |
| Buffer | H2SO4 – 0.2% |
| Flow Rate | 0.5 ml/min |
| Detection | UV 230nm |
High Performance Liquid Chromatography (HPLC) Method for Analysis of 1,5-Naphthalenedisulfonic Acid.
1,5-Naphthalenedisulfonic acid, also known as Armstrong’s acid, is a strong organic acid with a double charge. It has the chemical formula C10H8S2O6.
Multi-charged molecules generally have a tendency to exhibit poor peak shape in HPLC on reverse-phase columns showing significant tailing. 1,5-Naphthalenedisulfonic Acid can be retained with great peak shape on a Newcrom B mixed-mode column. The Newcrom line of columns was designed specifically for improved peak shape of multi-charged molecules. The method uses a mobile phase consisting of acetonitrile (ACN), water and ammonium formate buffer, making the method MS-compatible. UV detection at 260nm can also be used.
| Column | Newcrom B, 3.2 x 100 mm, 5 µm, 100 A, dual ended |
| Mobile Phase | MeCN/H2O – 70/30% |
| Buffer | Ammonium Formate pH 3.0 – 40 mM |
| Flow Rate | 0.5 ml/min |
| Detection | UV 285 nm |
| Class of Compounds | Acid |
| Analyzing Compounds | 1,5-Naphthalenedisulfonic Acid |
Application Column
Newcrom B
Column Diameter: 3.2 mm
Column Length: 100 mm
Particle Size: 5 µm
Pore Size: 100 A
Column options: dual ended





