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Ethylacetoacetate

http://www.chromforum.org/viewtopic.php?t=21460

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Ethylacetoacetate

Posted: Thu Dec 06, 2012 2:28 pm
by anandaraohs
Hi

why peak shape for Ethyl aceto acetate in almost all GC columns is fronting???????????

Re: Ethylacetoacetate

Posted: Thu Dec 06, 2012 3:55 pm
by Consumer Products Guy
You really provided very little information.

Try more dilute injection and/or smaller injection size.

Re: Ethylacetoacetate

Posted: Thu Dec 06, 2012 5:40 pm
by chromatographer1
This is caused by a lack of solubility of the analyte in the liquid phase and a greater affiniity for the analyte to itself.

The 50% phenyl methyl silicone phase seems to work best.

Be glad it elutes at all.

best wishes,

Rod
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