2-(2-Pyridyl)ethyl Silica Gel
SUPELCO/54127-U - bed wt 100 mg, volume 1 mL, pk of 108
Product Type: Equipment/Book
| application(s) | food and beverages |
| composition | bed wt, 100 mg |
| matrix active group | WAX phase |
| packaging | pk of 108 |
| Quality Level | 100  |
| separation technique | ion exchange |
| technique(s) | solid phase extraction (SPE): suitable |
| volume | 1 mL |
| General description: | Retention Mechanism: Anion-exchange Sample Matrix Compatibility: Organic or aqueous Solutions • Weak anion exchanger ideal for extracting strong basic compounds that remain charged at all pH levels • Unlike conventional weak anion exchange SPE phases such as -NH2 (aminopropyl) that have a pKa of 9-10, a pH ≤ 7 is required to protonate or ionize the stationary phase to facilitate analyte retention. Elution is typically done by increasing the pH to 11 resulting in neutralization of the SPE phase. • 2-(2-pyridyl)-ethyl silica gel has a pKa of ~6. Therefore, analyte elution is feasible at a pH ≥ 7. This characteristic is important for extracting analytes that are not stable (e.g. hydrolyzes) at high pHs typically required for elution when using traditional weak anion exchangers. • Ideal for extracting acyl-coenzyme A esters from tissue. • For more information, please see: Minkler, P.E., Kerner, J., Ingalls, S.T., Hoppel, C.L., Novel isolation procedure for short-, medium-, and long-chain acyl-coenzyme A esters from tissue, Analytical Biochemistry 376 (2008) 275–276 |
| Symbol |  GHS07 |
| Signal word | Warning |
| Hazard statements | H315 - H319 - H335 |
| Precautionary statements | P302 + P352 - P305 + P351 + P338 |
| Hazard Codes | Xi |
| Risk Statements | 36/37/38 |
| Safety Statements | 26-36 |
| RIDADR | NONH for all modes of transport |
| WGK Germany | WGK 3 |
| Flash Point(F) | Not applicable |
| Flash Point(C) | Not applicable |
| UNSPSC | 41115712 |