52641-U

Discovery^® DSC-NH₂ SPE Tube

bed wt. 2 g, volume 12 mL, pk of 20

• UNSPSC Code: 41115712
• NACRES: NB.21

Properties

• material: PE frit (20 μm); polypropylene
• feature: endcapped
• composition: bed wt., 2 g
• packaging: pk of 20
• technique(s): solid phase extraction (SPE): suitable
• surface area: 480 m²/g
• volume: 12 mL
• matrix: silica gel base material (irregularly shaped, acid washed)
• matrix active group: amino phase
• particle size: 50 μm
• pore size: 70 Å pore size
• pKa: 9.8
• capacity: ~0.43 meq/g capacity
• application(s): food and beverages
• separation technique: ion exchange; normal phase

Description

General description

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

Legal Information

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

Safety Information

• Storage Class: 11 - Combustible Solids
• wgk_germany: WGK 3
• flash_point_f: >464.0 °F
• flash_point_c: > 240 °C