Opylation
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Using CHCl3 as a solvent for the capture of AlCl3
Hello everybody,
I am curious as to what you guys think about using CHCl3 as a solvent for capturing AlCl3 sublimate? I found the easiest way to go about making AlCl3
for me was to first make CuCl2, dehydrate it, and then dry distilled with aluminum powder. I’ve seen a few videos here and there that do a similar
procedure with other transition metals and since ZnCl2 is a bitch to dehydrate without high heat I thought CuCl2, with its relatively low temp
dehydration would be a good alternative
This leads me to my actual question. Dry distilling alcl3 seems to produce sublimate that, in an open receiver, goes in, out, and around the
container. Even within an attached receiver has the chance of escaping out the vacuum adapter, or wherever the outflowing gases continue past the
receiver. Since alcl3 is a Lewis Acid and CHCl3 is a very very weak acid, they won’t react right? I see AlCl3 has solubility in chlorinated solvents
and was thinking feeding a glass tube into submerged CHCl3 then vacuum stripping the solvent for anhydrous AlCl3.
Please enlighten me
[Edited on 31-5-2020 by Opylation]
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Ubya
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http://chemister.ru/Database/properties-en.php?dbid=1&id...
according to this AlCl3 has a solubility of 0.049g/100ml at 25°C
if you got absolute ethanol it might work better
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Opylation
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I though aluminum trichloride reacts with alcohols to form aluminum alkoxides, no?
Checking the solubility it looks like 1,2-dichloroethane has a decent solubility however I am concerned that it’s because it’s reacting. I read
that alcl3 only reacts with alkyl monohalides but does that refer to the whole structure of just what’s bound do a single carbon? Because
1,2-dichloroethane obviously has a single chlorine on each carbon.
[Edited on 31-5-2020 by Opylation]
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chemplayer...
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Not sure about CHCl3 but we did a fair few experiments with anhydrous AlCl3 in dichloromethane (CH2Cl2) and it did seem to be fairly soluble.
Your challenge with the procedure will be:
1. The reaction with CuCl2 rather than ZnCl2 will be much more exothermic.
2. The temperature and rapidly of the AlCl3 vapour produced will likely overwhelm the solvent.
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