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Catalog No. MN720057.46
Part No. 720057.46
Supplier MACHEREY‑NAGEL
EC HPLC column (analytical), NUCLEOSIL 120-7 CN, 7 µm, 250x4.6 mm
Net Price
Special offer
Availability

6 weeks

PROPERTIES
  • Recommended application(s)
    HPLC, Organic acids, Reversed phase and normal phase chromatography, Steroids, Tricyclic antidepressants
  • Storage temperature
    RT
  • Scope of delivery
    1x analytical HPLC column, instruction leaflet, certificate of analysis
  • Hazardous material
    No
  • Method
    HPLC, analytical
  • Brand
    NUCLEOSIL
  • Base material
    NUCLEOSIL - the standard silica
  • Phase
    NUCLEOSIL 120-7 CN
  • USP listing
    L10
  • Surface chemistry
    Cyano, nitrile (CN) modification
  • Mode
    Multi-mode (NP and RP), Normal phase (NP)
  • Type
    EC HPLC column (analytical)
  • Hardware
    Stainless steel
  • Column length
    250 mm
  • Column inner diameter
    4.6 mm
  • Particle type
    Fully porous particles (FPP)
  • Particle shape
    Spherical
  • Particle size
    7 µm
  • Eluent in HPLC column
    n-heptane
  • Endcapped
    No
  • Carbon content
    3.0 %
  • pH stability
    2.0–8.0
  • Pore size
    120 Å
  • Specific surface according to BET
    200 m²/g
  • Temperature stability (max)
    60 °C
  • Pressure stability (max)
    400 bar
  • Column volume
    4.15 mL
DESCRIPTION
The cyanopropyl phase is able to generate a clearly recognizable different retention behavior compared to purely alkyl-functionalized surface modifications. The polarity can be classified as intermediate based on multiple retention mechanisms such as dipole-dipole, π-π, and also hydrophobic interactions. Therefore, CN phases show a distinct selectivity for polar organic compounds as well as for molecules containing π-electron systems (e.g., analytes with double bonds). This HPLC phase can be run in the RP mode using aqueous-organic eluent mixtures as well as in the NP mode, e.g., with hexane as mobile phase. This HPLC column is packed with CN modification, based on the original NUCLEOSIL silica gel. It is one of the first spherical silicas for HPLC and was originally developed by MACHEREY-NAGEL in 1974. It is exclusively manufactured in Germany and is still one of the most used HPLC silicas in quality control around the globe.
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