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Thread: Drying of Alcohol.

  1. #1 Drying of Alcohol. 
    New Member
    Join Date
    Jun 2005
    Posts
    2
    Dear All,
    I am working on various methods of drying of 1-Butanol from a present concentration of 99%. Recently I have used Sodium Sulfate (anhydrous) for this process. I have dissolved excess amount of Soduim Sulfate in alcohol. The problem is that how can I be sure that whether the alcohol I get after the filteration is dry or not. The recommended Karl-Fischer apparatus is not available here. Any suggestions regarding this method!
    I will be grateful.
    Regards,
    Atta.


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  3. #2  
    Forum Freshman
    Join Date
    Dec 2013
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    VARANASI
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    17
    We dry ethanol in our laboratory frequently. The dry anhydrous ethanol is very hygroscopic. Usually we test our stored ethanol for water (coming in it by the moisture in air).

    Water (down to 0.05%) can be detected by formation of a voluminous ppt when aluminium ethoxide in *benzene is added to a test portion.
    I would refer you to this marvelous book for all you queries regarding the purification of chemicals.

    " Purification of laboratory chemicals" Book by D. D. Perrin ; Purification of Laboratory Chemicals - W.L.F. Armarego, Christina Chai - Google Books


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  4. #3  
    Forum Ph.D.
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    Jan 2009
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    951
    T
    RY magnesium perchlorate
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