Question
GeneralGeneralGeneral

Who Gives the Iodoform Test?

Verified Answer

The iodoform test is given by compounds containing a methyl ketone group (CH₃CO-) or compounds that can be oxidized to methyl ketones.

Compound TypeExampleCondition
Methyl ketonesAcetone (CH₃COCH₃)Directly
EthanolCH₃CH₂OHOxidized to acetaldehyde
AcetaldehydeCH₃CHODirectly
Secondary alcohols with CH₃CHOH-2-propanolOxidized
  • Test reagents: Iodine (I₂) + sodium hydroxide (NaOH)
  • Positive result: yellow precipitate of iodoform (CHI₃) with a characteristic antiseptic odor
  • The structural requirement is the CH₃CO- group