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COSMOSIL 5C4-MS

Cosmosil 5C8-MS alkyl-chained columns use packing material which combine alkyl chains (except C18) such as C8 (octyl), C4 (buty) and TMS (trimethyl). As the length of  alkyl chain becomes shorter, the hydrophobic interaction becomes weaker.
Owing to the ultra end-capping treatment with very low levels of free silanol as in the case of C18  columns, COSMOSIL alkyl-chained columns can be used widely for the general analysis of compounds including those for which C18 columns produce long retention times.

MATERIAL CHARACTERISTICS

COSMOSIL 5C4-MS
Silica gel
high purity porous spherical silica gel
Average particle size
5µm
Average pore size
approx. 120Å
Specific surface area
approx. 300m²/g
Stationary phase
butyl group
End capping treatment
near-perfect treatment
Carbon content
approx. 7%

BEHAVIOR OF POLAR COMPOUNDS

For the analysis of non-polar compounds such as benezene and toluene, the column shows weaker retention as the length of alkyl-chain become shorter. This retention increases for polar compounds such as acetophenone and
ethylbezoate.


Catalog # Cosmosil 5C4-MS Column Price ($U.S.) -
093-8163 5C4-MS - Analytical Column, 4.6 x 50 mm $319.00
093-8164 5C4-MS - Analytical Column, 4.6 x 100 mm $381.00
093-8165 5C4-MS - Analytical Column, 4.6 x150 mm $402.00
093-8166 5C4-MS - Analytical Column, 4.6 x 250 mm $505.00
093-8167 5C4-MS - Semi-preparative Column, 6 x150 mm $515.00
093-8168 5C4-MS - Semi-preparative Column, 6 x 250 mm $628.00
093-8169 5C4-MS - Preparative Column,10 x 250 mm $1,020.00
093-8170 5C4-MS - Preparative Column, 20 x 250 mm $1,957.00
093-8161 5C4-MS - Analytical Guard Column, 4.6 x 10.0 mm $309.00
093-8162 5C4-MS - Semi-preparative Guard Column, 10 x 20 mm $525.00

 

 

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