Detection of Polynuclear Hydrocarbons and Phenols with Benzal and

Detection of Polynuclear Hydrocarbons and Phenols with BenzaI and Piperonal Chlorides EUGENE SAWICKI, ROBERT MILLER, THOMAS STANLEY, and THOMAS HAUSER Robert A. Taft Sanitary Engineering Center,

U. S.

b In a sensitive color test for aromatic hydrocarbons and phenols, the aromatic compound reacts with benzal or piperonal chloride in trifluoroacetic acid to form a brilliantly colored diarylmethane dye. The colors and long wave length maxima for approximately 50 derivatives are presented. For mono-substituted benzene derivatives, the long wave length maximum of the piperonal chloride products shifted to longer wave length in the order H