52640-U

Supelco

Discovery® DSC-NH2 SPE Tube

bed wt. 1 g, volume 6 mL, pk of 30

NACRES:
NB.21

material

PE frit (20 μm)
polypropylene

Quality Level

feature

endcapped

composition

bed wt., 1 g

packaging

pk of 30

application(s)

solid phase extraction (SPE): suitable

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

surface area

480 m2/g

pKa 

9.8

capacity

~0.43 meq/g capacity

Featured Industry

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

  • 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 Sigma-Aldrich Co. LLC

storage_class_code

11 - Combustible Solids

WGK Germany

WGK 3

Flash Point F

464.0 °F

Flash Point C

> 240 °C

Certificate of Analysis

Certificate of Origin

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