chemrox
International Hazard
Posts: 2961
Registered: 18-1-2007
Location: UTM
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Mood: LaGrangian
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fried heterocyclic amine
I followed a procedure for obtaining an HCl salt by azeotropic distillation. The solvent was water in xylene. The xylene amount was supposed to be
10:1. I cut this to 4:1 based on a previous distillation of the two components. Big mistake. At close to the end the free base started getting
fried and coming over. What a mess. I may be able to salvage some of the product with norite and a/b extraction. The thing that bothers me is why
would the HCl separate and release the base? The aqueous solution was strongly acidic prior to the distillation. Please be kind, this hurts.
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Maya
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Posts: 263
Registered: 3-10-2006
Location: Mercury
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Mood: molten
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it doesn't , salts don't distill ( unless it is an ammonia salt or a methlyamine salt ) you fried your compound. now its obviously something else.
try using a lower temperature or something other than xylene  
[Edited on 2-2-2007 by Maya]
\"Prefiero ser yo extranjero en otras patrias, a serlo en la mia\"
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