The COSMOSIL® PE-MS columns (phenylethyl functional group) and the COSMOSIL® CN-MS columns (cyanopropyl functional group) possess a secondary separation mode ( π-π interaction ). These columns are highly recommended for situations where a C18 or other alkyl chains cannot separate isomers and other compounds of structural similarity.
Material characteristics
5PE-MS 5CN-MS Silica gel high purity spherical porous silica Average particle size 5µm Average pore size approx. 120Å Specific surface area approx. 300m²/g Stationary phase phenylethyl group cyanopropyl group End capping treatment near-perfect treatment Carbon content approx. 10% approx. 7%
Analysis of mono-substituted benzenes
The COSMOSIL® PE-MS shows slightly longer retention time for compounds such as nitrobenzenes, which have electron acceptors, or electron donor compounds (such as anisole). This suggests that COSMOSIL® PE-MS may be effective for the analysis of the compounds, which cannot be separated by a C18 column.
Analysis of dinitrobenzenes
COSMOSIL® PE-MS and COSMOSIL® CN-MS separate those dinitrobenzene isomers which cannot be separated by C18 columns. ClickClick
Ordering information
COSMOSIL® 5PE-MS Product name Size Code No. End-fitting COSMOSIL® 5PE-MS Guard Column 4.6mmI.D.x 10mm 38181-41 Waters type 10mmI.D.x 20mm 38182-31 COSMOSIL® 5PE-MS Packed Column 4.6mmI.D.x 50mm 38183-21 4.6mmI.D.x 100mm 38184-11 4.6mmI.D.x 150mm 38185-01 4.6mmI.D.x 250mm 38186-91 6mmI.D.x 150mm 38187-81 6mmI.D.x 250mm 38188-71 10mmI.D.x 250mm 38189-61 20mmI.D.x 250mm 38190-21
COSMOSIL® 5CN-MS Product name Size Code No. End-fitting COSMOSIL® 5CN-MS Guard Column 4.6mmI.D.x 10mm 38231-81 Waters type 10mmI.D.x 20mm 38232-71 COSMOSIL® 5CN-MS Packed Column 4.6mmI.D.x 50mm 38233-61 4.6mmI.D.x 100mm 38234-51 4.6mmI.D.x 150mm 38235-41 4.6mmI.D.x 250mm 38236-31 6mmI.D.x 150mm 38237-21 6mmI.D.x 250mm 38238-11 10mmI.D.x 250mm 38239-01 20mmI.D.x 250mm 38240-61
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