Wednesday, March 26, 2008

Iodoform test

The iodoform test (or tri Iodomethane test) is used to identify the presence of 2 particular structural units:


1)RCH(OH)CH3

2)RCOCH3

*R denotes H, alkyl or aryl group


In positive tests, the reaction will produce a yellow precipitate of CHI3.


Equations:



*Click on picture for a clearer and bigger view
Any compound which contains the above mentioned structural units will result in a positive iodoform test. Ethanol is the only first degree alcohol to give a positive iodoform test.

2 comments:

vanilah88 said...

great explaination please if you can send more experimaetns that reffers to ORGANIC CHEMISRTY to my Email marwahlutfi@gmail.com

thank you! have a nice day !

Anonymous said...

i hope you cited more examples of compounds that give positive iodoform test and explained why. :(