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Topic: Distribution coefficient (Kd)  (Read 1539 times)

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Offline vverityv

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Distribution coefficient (Kd)
« on: March 07, 2013, 02:08:06 PM »
I recently performed an experiment in which I extracted vanillyl alcohol in ethyl acetate and water

The Kd in ethyl acetate and water is known to be 1.29 and my value was 1.14.  Is there a reason why it is so low?  I know that when transferring the liquid away from the drying agent to be boiled off if any of the drying agent is transferred it will give a particularly high Kd, but I'm not really sure what to make of it if it's too low.  Loss of product from the drying agent maybe??

Also, does anyone know what a 'good' %error would be on an extraction experiment?
« Last Edit: March 07, 2013, 02:43:04 PM by vverityv »

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