52640-U
Discovery® DSC-NH2 SPE Tube
bed wt. 1 g, volume 6 mL, pk of 30
Synonym(s):
NH2 (amine) SPE cartridge tube
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About This Item
NACRES:
NB.21
UNSPSC Code:
41115712
eCl@ss:
32035701
Quality Segment
material
PE frit (20 μm), polypropylene
product line
Discovery®
feature
endcapped
composition
bed wt., 1 g
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
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
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Storage Class
11 - Combustible Solids
WGK
WGK 3
Flash Point (°F)
>464.0 °F
Flash Point (°C)
> 240 °C
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