Distillation method
Methyl vinyl ketone or (3-buten-2-one) has a boiling point of 81.4 oC. It is purified by vacuum distillation ,i.e. using simple distillation set-up connected to a vacuum pump from the side arm of the receiving or curved adapter.
Gupta,
After drying with K2CO3 and CaCl2 (with cooling) the ketone is distilled at low pressures as Dr. Matar mentioned. Please, see
---http://books.google.com.sa/books?id=4ViVUQi7Z60C&pg=PA189&lpg=PA189&dq=methyl+vinyl+ketone+purification&source=bl&ots=7I7s3kghGW&sig=hQFrrLfDVhG956ZKLVOiaYNjSqg&hl=en&sa=X&ei=sH94U6f_LLGS0QWViYDYDg&ved=0CCgQ6AEwAA#v=onepage&q=methyl%20vinyl%20ketone%20purification&f=false
Good luck
why the ketone has been distill at low pressure?
The procedure for purification of Methyl vinyl ketone is to distill it under reduced pressutre to get pure compd. without decomposition.
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