Studies on the Microanalysis of Essential Oil Components. IV. The Spot Test of Essential Oil Components by Antimony Pentachloride.

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Amongst numerous color tests for essential oil components present, 10% chloroform or ethylene dichloride with 0.01% iodine solution of antimony pentachloride was regarded to be most excellent so far as the instantaneous spot test was concerned. The majority of compounds belonging to the category of essential oil constituents produced characteristic colors by merely touching the reagent to the sample on filter paper, without any additional treatment.