Gilman test

The Gilman test is a chemical test for the detection of Grignard reagents and organolithium reagents.{{cite journal|title=A qualitative color test for the Grignard reagent|author=Henry Gilman and F. Schulze|journal=J. Am. Chem. Soc.|year=1925|volume=47|issue=7|pages=2002–2005|doi=10.1021/ja01684a032}}{{OrgSynth|collvol=1|collvolpages=188|title=Cyclohexylcarbinol|year= 1941|prep=cv1p0188}}

A 0.5 mL sample is added to a 1% solution of Mischler's ketone in benzene or toluene. To this solution is added 1 mL of water for hydrolysis to take place and then several drops of 0.2% iodine in glacial acetic acid. If the color of the resulting solution becomes a greenish-blue then the original sample did contain the organometallic species.