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Isolation of Aspirin From Commercial Tablets

  • 12-03-2014 6:13pm
    #1
    niamhhealy86
    Registered Users, Registered Users 2 Posts: 64 ✭✭


    During a recent experiment as part of my first year 3rd level chemistry course, I was attempting to isolate aspirin from commercial tablets.

    I got to the stage where i had isolated crude aspirin with no issues but when i attempted to purify this i ended up with an immeasurable quantity..

    Where could this have gone wrong?

    #stumped


    Thanks :)
    Tagged:


Comments

  • #2
    SOL
    Registered Users, Registered Users 2 Posts: 1,155 ✭✭✭SOL


    Tell us what you actually did and maybe we can help! There are many ways in which it could have gone wrong...


  • #3
    Di acetyl Morphine !
    Banned (with Prison Access) Posts: 5 ✭Di acetyl Morphine !


    niamhhealy86 wrote: »
    During a recent experiment as part of my first year 3rd level chemistry course, I was attempting to isolate aspirin from commercial tablets.

    I got to the stage where i had isolated crude aspirin with no issues but when i attempted to purify this i ended up with an immeasurable quantity..

    Where could this have gone wrong?

    #stumped


    Thanks :)

    What do you mean by immeasurable?? Do you mean your yield is greater than the actual weight of the tablet (or the stated quantity of acetylsalicylic acid on the box ) ??

    if so, try continuous vacuum filtration followed by a short stint in the oven at about 50°C for a few hours.


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