Cabalaba
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Acidic alcohols, eg; ethanol with 1M HCl
I used an alcohol, I think methanol with HCl disssolved (the solution was bought from ) to salt out a product after an A-B extraction.
How long before, if ever, most HCl reacts with the alcohol, whether it's methanol, ethanol, etc, and becomes the chloroalkane?
I know with a secondary or tertiary alcohol, it would be a chloroalkane quickly but how long do these supplies keep stock of something like methane
with 1.5M HCl?
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NEMO-Chemistry
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Quote: Originally posted by Cabalaba  | I used an alcohol, I think methanol with HCl disssolved (the solution was bought from ) to salt out a product after an A-B extraction.
How long before, if ever, most HCl reacts with the alcohol, whether it's methanol, ethanol, etc, and becomes the chloroalkane?
I know with a secondary or tertiary alcohol, it would be a chloroalkane quickly but how long do these supplies keep stock of something like methane
with 1.5M HCl? |
Looks like its VERY slow! Sigma sell Methanol in HCl for chromatography apparently, but anyway I found this that suggests its a long process
http://www.eng-tips.com/viewthread.cfm?qid=88469
Looks like a zinc catalyst is needed??
https://sta.uwi.edu/eng/wije/vol0402_jul1973/documents/Methy...
[Edited on 22-6-2016 by NEMO-Chemistry]
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diggafromdover
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Primary alcohols do not react well enough with HCl to offer a reasonable synthesis route.
Secondary alcohols need a catalyst like ZnCl2 or FeCl3 to react with HCl.
Tertiary alcohols react rapidly with HCL.
Yesterday was so warm my tert-butanol melted.
[Edited on 22-6-2016 by diggafromdover]
Enjoying second childhood with REAL chemistry set.
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