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A member asked:
Can you tell me how i could chemically distinguished among ethanal and propanal?
A doctor has provided 1 answer
Easy.: I am assuming you mean ethanal (acetaldehyde) and propanal (propionaldehyde) and not ethanol and propanol which are far more commonly encountered. How about NMR or GC? Physical test would be BP ethanal 68.4 F BP propanol 115-122 F Chemical test - iodine in KOH gives a positive reaction for ethanal and not for proposal.
Answered 11/24/2014
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