Note: adapt
volume of stock solution to the estimated number of tests you plan. For
about 30 tests: Prepare a
stock solution by dissolving 10g ceric ammonium nitrate in 25ml 2M nitric acid.
procedure 1:
Dilute 1ml reagent with 2ml water. Add 5 drops
of the unknown sample and shake.
procedure 2:
Make blank tests with positive reacting compounds
(ethanol) and with negative reacting compounds (e.g.
hydrocarbons, carbonic acids, esters, ketones).
observation:
If the sample contains
an alcohol, the colour will change from yellow to orange/red.
disposal of:
Heavy metal
solutions.
source:
after Barke, H.-D. et al.: One Hundred
Chemistry-Experiments to Avoid Chalk and Talk; University of Muenster,
2004.
