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Topic: extraction solvents  (Read 3781 times)

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Offline portugal

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extraction solvents
« on: April 11, 2008, 04:54:43 AM »
would a good extraction solvent be for separating a racemic mixture of phenylbutnaoic acid from phenylethylamine. i already known that you would use an acid to neutralise the amine component and then you need to separate that from the butyrate so i am leaning towards a polar solvent such as ethanol becuase the butyrate will move into that allowing separation from the amine????

Offline Yggdrasil

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Re: extraction solvents
« Reply #1 on: April 11, 2008, 06:21:59 PM »
Usually in this type of extraction, you would have your uncharged species in an organic solvent and extract your acid into aqueous base.

Offline ARGOS++

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Re: extraction solvents
« Reply #2 on: April 13, 2008, 08:26:35 PM »
Dear Portugal;

i already known that you would use an acid to neutralise the amine component and then you need to separate that from the butyrate so i am leaning towards a polar solvent such as ethanol becuase the butyrate will move into that allowing separation from the amine????
If it would work it would still remain in the aqueous Phase, because Ethanol is “fully miscible” with Water, also in case the Water would be saturated with Salt:  "Ethanol


But there are several other Solvents, which will really do the Job.
(Ethers, “Amyl-Alcohol + Salt”, higher Ketones, etc., etc.)

Good Luck!
                    ARGOS++


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