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The iodoform test or iodoform reaction is a qualitative chemical test for the detection of ketones and aldehydes carrying an alpha methyl group. The reagents are iodine and sodium hydroxide.Only methyl ketones, or alcohols with the feature: CH3CH(OH)-R may undergo this reaction.The iodoform test or reaction is a chemical reaction where iodoform (CHI3) is produced by the multiple halogenation of a methyl ketone (a molecule containing the R-CO-CH3 group) in the presence of a base. R may be H, alkyl or aryl.
Ethanal is the only aldehyde to give the triiodomethane (iodoform) reaction. If Ris a hydrocarbon group, then you have a ketone. Lots of ketones give this reaction, but those that do all have a methyl group on one side of the carbon-oxygen double bond.These are known as methyl ketones.Equations for the triiodomethane (iodoform) reaction We will take the reagents as being iodine and sodium hydroxide solution.ots of ketones give this reaction, but those that do all have a methyl group on one side of the carbon-oxygen double bond. These are known as methyl ketones. Equations for the triiodomethane (iodoform) reaction We will take the reagents as being iodine and sodium hydroxide solution.