Removing IPA from DI water

Guest,

By IPA, I presume that you are referring to isopropanol (as opposed to India Pale Ale!):

If so, a simple distillation apparatus should suffice - Isopropanol has a boiling point of 181 degrees F (82.7 degrees C).

Just watch out for open flames!

Ah! Question: does it form a constant-boiling mixture, please, like the ethanol-water mixture (to completely separate ethanol-water a third component is required; benzene is usually selected)?

PWSlack,

You are correct...

IPA does form a constant-boiling mixture (CBM) with water: Specifically, the azeotropic mixture consists of 87% (m/m) IPA and 13% (m/m) water.

But 87% IPA is better than nothing, (I suppose...)

Thanks for confirming this <bows respectfully>.

Guest: at this ratio of IPA to water the condensed liquid will have the same composition as the vapour, and futher separation of the two by distillation is impossible without adding a third component, like in the ethanol-water system. The component added will depend on the nature of the reuse of the IPA and the water, and of the economics of so doing.

http://en.wikipedia.org/wiki/IPA_%28disambiguation%29 <yawn>.

Trying to recover the water

Thanks

Quantities?

I you're interested you can send us a sample and I 'll run it thru a demo unit and send it to our lab for confirmation.

Regards.

Ted

www.global3r.com

ftp.global3r.com