52638-U
Discovery® DSC-NH2 SPE Tube
bed wt. 500 mg, volume 6 mL, pk of 30
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About This Item
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material
PE frit (20 μm)
polypropylene
feature
endcapped
composition
bed wt., 500 mg
packaging
pk of 30
technique(s)
solid phase extraction (SPE): suitable
surface area
480 m2/g
volume
6 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
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General description
Retention Mechanism: Normal phase or Anion-exchange
Sample Matrix Compatibility: Organic or aqueous solutions
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
Storage Class Code
11 - Combustible Solids
WGK
WGK 3
Flash Point(F)
>464.0 °F
Flash Point(C)
> 240 °C
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