The phenyl phase offers selectivity through π-π interactions, making it ideal for separating aromatic compounds.
The PFP phase, based on pentafluorophenyl-modified silica, exhibits strong polar interactions, offering enhanced selectivity for polar compounds. Its unique electronic and steric properties also provide stereoselectivity, enabling improved separation of structural isomers.
| Base | BS silica | |||
|---|---|---|---|---|
| Shape | Spherical | |||
| Metal content | ＜30ppm | |||
| Bonding phase | Phenyl | PFP | ||
| Particle size | 8/10μm | 8/10μm | ||
| Pore size | 100 Å | 120Å | 100 Å | 120Å |
| Operating pressure | ＜20MPa | ＜20MPa | ＜20MPa | ＜20MPa |
| Max pressure | ＜40MPa | ＜40MPa | ＜40MPa | ＜40MPa |
| Pore volume | ~ 1.0 mL/g | ~ 1.0 mL/g | ~ 1.0 mL/g | ~ 1.0 mL/g |
| Specific surface area | ~ 400 m2/g | ~ 320 m2/g | ~ 400 m2/g | ~ 320 m2/g |
| Bulk density | ~ 0.55 g/mL | ~ 0.55 g/mL | ~ 0.55 g/mL | ~ 0.55 g/mL |
| Carbon content | 12% | 12% | 12% | 12% |
| pH range | 2-9 | 2-9 | 2-9 | 2-9 |