52641-U

Discovery^® DSC-NH₂ SPE Tube

bed wt. 2 g, volume 12 mL, pk of 20

• Código UNSPSC: 41115712
• NACRES: NB.21

Propriedades

• Materiais: PE frit (20 μm); polypropylene
• Nível de qualidade: 100
• Características: endcapped
• composição: bed wt., 2 g
• embalagem: pk of 20
• técnica(s): solid phase extraction (SPE): suitable
• área da superfície: 480 m²/g
• volume: 12 mL
• matriz: silica gel base material (irregularly shaped, acid washed)
• Grupo ativo da matriz: amino phase
• tamanho de partícula: 50 μm
• tamanho de poro: 70 Å pore size
• pKa: 9.8
• capacidade: ~0.43 meq/g capacity
• aplicação(ões): food and beverages
• técnica de separação: ion exchange; normal phase

Descrição

Descrição geral

Retention Mechanism: Normal phase or Anion-exchange
Sample Matrix Compatibility: Organic or aqueous solutions

• Polymerically bonded, aminopropyl phase that is very polar in nature (hydrogen bonding) allowing for both normal phase and ion exchange applications
• A weak anion exchanger with a pKa of 9.8. At pH 7.8 or below, the functional groups are positively charged
• Ion exchange capacity is ∼ 0.43 meq/g.
• Allows the rapid release of very strong anions such as sulfonic acids that may be retained irreversibly by strong anion exchangers
• Can be used in some reversed-phase applications (due to ethyl spacer); however, it is predominately used as an ion-exchange or normal phase sorbent due to its polar nature

Informações legais

Discovery is a registered trademark of Merck KGaA, Darmstadt, Germany

Informações de segurança

• Código de classe de armazenamento: 11 - Combustible Solids
• Classe de risco de água (WGK): WGK 3
• Ponto de fulgor (°F): >464.0 °F
• Ponto de fulgor (°C): > 240 °C