, Lab Report
...chromatography, the retention factors (Rf) of the seven pure food dyes, red 3 (R3), red 40 (R40), blue 1 (B1), blue 2 (B2), yellow 5 (Y5), yellow 6 (Y6), and green 3 (G3), approved by the Food and Drug Administration (FDA) and dissolved in three different solvent systems, distilled water, 70% isopropyl alcohol, and 0.10% sodium chloride (NaCl) solution. The solvent solution that resulted to the best separation was then be used to identify the dyes in unknown mixtures. This experiment would then demonstrate the use of paper chromatography in analysis... SEPARATING AND IDENTIFYING FOOD DYES BY PAPER CHROMATOGRAPHY The resolution of blue green 3, yellow 5, yellow 6, red 40, blue 2, and red 3, determined...