BRAINCAKEIodoform Reaction
The iodoform reaction (triiodomethane reaction) is a test for the methyl carbonyl group, CH3C=O, in which the carbonyl carbon is bonded to a methyl group. Iodine is added to the compound in the presence of alkali (sodium hydroxide solution) and the mixture is warmed gently.
A positive result is a pale yellow precipitate of triiodomethane (iodoform), CHI3, which has a characteristic antiseptic smell.
For a methyl ketone, RCOCH3:
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More in Carbonyl Compounds
- Physical Properties of Carbonyls
- Oxidation of Aldehydes
- Tollens' Reagent
- Fehling's and Benedict's Solutions
- 2,4-DNPH Test
- Reduction with LiAlH4
- Reaction with HCN
- Nucleophilic Addition Mechanism
All 11 lessons in Carbonyl Compounds · All Edexcel A-level Chemistry topics