Synopsis Identify the FD+C dyes (single compounds) in M+Ms and Food colorings which are mixtures of the FD+C dyes.
Prepper Special Instructions:
Verify plenty of chromatography paper in a roll 1 week in advance, Cut paper into strips
Instructor Notes/Comments Each student notebook and the lab report needs a set of the chromatography data. This can be done by analyzing the same sample in multiple trials or 1 trial and pictures/scans of that one data set with color printing to the lab report and student notebooks. Student papers are dried in a 85 deg C oven. Calculate the retention factor (Rf) for each spot and compare Rf values for FD+C dyes to those spots observed for M+Ms and food colorings.