Chapter 148 of 2363 min read
Detection of functional groups and elements
Why this is asked: The iodoform test isn't exclusive to methyl ketones — any compound with a CH₃–CH(OH)– group, such as ethanol or isopropanol, also gives it, because it oxidises to the methyl ketone or aldehyde in situ under the test conditions. A positive iodoform test on an unknown alcohol therefore doesn't by itself prove a ketone is present — that's the standard trap.
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