52641-U

Discovery^® DSC-NH₂ SPE Tube

bed wt. 2 g, volume 12 mL, pk of 20

• UNSPSC 코드: 41115712
• NACRES: NB.21

속성

• material: PE frit (20 μm); polypropylene
• Quality Level: 100
• 특징: endcapped
• 구성: bed wt., 2 g
• 포장: pk of 20
• 기술: solid phase extraction (SPE): suitable
• 표면적: 480 m²/g
• 용적: 12 mL
• Matrix: silica gel base material (irregularly shaped, acid washed)
• 기질 활성군: amino phase
• 입자 크기: 50 μm
• 공극 크기: 70 Å pore size
• pKa: 9.8
• 용량: ~0.43 meq/g capacity
• 응용 분야: food and beverages
• 분리 기술: ion exchange; normal phase

설명

일반 설명

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

법적 정보

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

안전성 정보

• Storage Class Code: 11 - Combustible Solids
• WGK: WGK 3
• Flash Point (°F): >464.0 °F
• Flash Point (°C): > 240 °C