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Nacalai Tesque COSMOSIL 3πNAP Analytical HPLC Column, 3 µm, 120 Å, 4.6 x 150 mm, 1/Pk - 21526-51

Price: £504.00


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COSMOSIL πNAP

Nacalai Tesque COSMOSIL 3πNAP Analytical HPLC Column, 3µm, 120Å, 4.6mm I.D. x 150mm Length, 1/Pk

Product Number: 21526-51

Specialty for Structural Isomers / π-π interaction, excellent selectivity for unsaturated compounds

  • Naphthalene bonded stationary phase
  • Enhanced π-π interactions
  • Improved selectivity for structural isomers

Separation of unsaturated compounds on conventional reversed phase columns such as C8 and C18 is often problematic. Phenyl stationary phases are commonly used for these compounds because they form π-π interactions and show different selectivity from conventional alkyl phases. However, the π-π interactions on phenyl stationary phases are moderate, and the separation for some unsaturated compounds are still insufficient.

COSMOSIL πNAP is a Reversed Phase HPLC Column with naphtylethyl group bonded silica packing material. The naphthylethyl group is composed of two fused aromatic rings and forms strong π-π interactions with unsaturated compounds. This column offers improved selectivity for structural isomers that exhibit differences in saturation.

COSMOSIL πNAP
Silica gelHigh purity porous spherical silica
Average particle size2.5 µm3 µm5 µm
Average pore sizeapprox. 130 Åapprox. 120 Åapprox. 120Å
Specific surface areaapprox. 330m2/gapprox. 300 m²/gapprox. 300 m²/g
Stationary phaseNaphtylethyl group
Bonding typeMonomeric
Carbon contentapprox. 11%-approx. 11%
Usable pH range2 - 7.5

Column Specifications:

Product descriptionCosmosil® 3πNAP Packed Column 4.6mmx150mm
Quantity1 pc
ManufacturerNacalai Tesque
BrandCosmosil
Product TypeHPLC Column
Length150 mm
Internal Diameter4.6 mm
Particle Size3 µm
ChemistryNaphthylethyl
Chemistry Producers TermπNAP
Pore Size120 Å
Carbon Load11.0 %
Bet Surface Area [m2/g]300.0
EndcappingEnd-Fitting: Waters type
Column TypeAnalytical Column
Hardware MaterialStainless Steel
Hardware TypeReady-to-use Column
pH Minimum2.0
pH Maximum7.5
Mode of SeparationReversed Phase Chromatography (RP)
TechnologyHigh-Performance Liquid Chromatography (HPLC)
MatrixSilica
Particle Morphologyspherical, fully porous


 Additional Column Sizes are available - Please contact our Sales Team with your requirements.

Cosmosil Columns Online Catalogue:


  • Model: 21526-51
  • Manufactured by: Nacalai Tesque