54127-U

2-(2-Pyridyl)ethyl Silica Gel

bed wt 100 mg, volume 1 mL, pk of 108

• UNSPSC-Code: 41115712
• NACRES: NB.21

Eigenschaften

• Zusammensetzung: bed wt, 100 mg
• Verpackung: pk of 108
• Methode(n): solid phase extraction (SPE): suitable
• Volumen: 1 mL
• Aktive Matrixgruppe: WAX phase
• Anwendung(en): food and beverages
• Trenntechnik: ion exchange

Beschreibung

Allgemeine Beschreibung

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

Sicherheitshinweise

• Piktogramme: GHS07
• Signalwort: Warning
• H-Sätze: H315,H319,H335
• P-Sätze: P261 - P264 - P271 - P280 - P302 + P352 - P305 + P351 + P338
• Gefahreneinstufungen: Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3
• Zielorgane: Respiratory system
• Lagerklassenschlüssel: 11 - Combustible Solids
• WGK: WGK 3
• Flammpunkt (°F): Not applicable
• Flammpunkt (°C): Not applicable