How to perform a TLC?

Experiment A: influence of volatility

Collect the liquids below in vials:

toluene
acetone
ethanol
dimethylformamide
dichloromethane

Using capillaries, make the deposits of the previous liquids (by separating each deposit by about 1 cm). Observe IMMEDIATELY under a UV lamp, then again a few minutes later. Conclude.

2 inserts: visualize the TLC results and Conclusion on this experiment.

Observation under UV lamp of 3 solvent deposits:

Toluene – Ethanol - Acetone
a) Right after the deposit
b) 1 min after the deposit

We observe that:

toluene and acetone are volatile since they are no longer revealed a minute after the deposit
ethanol does not absorb under UV.

Click on each box to see the result