Chemistry Reference
In-Depth Information
Figure 1
Aspirin, acetaminophen, and ibuprofen are some
over-the-counter analgesics.
Time Required
60 minutes
Materials
2
5 silica-coated chromatography plates (precut)
2
microcapillary tubes
2
5 developing chambers (small jars with lids)
2
standard chromatography solutions (premixed) for:
aspirin
✔
✔
acetaminophen
✔
caffeine
✔
ibuprofen
2
several over-the-counter analgesic tablets of various brands
such as Excedrin™, Aspirin™, Midol™, Tylenol™, Advil™, and
Anacin™.
2
knife
2
mortar and pestle
2
spatula
2
small test tubes
2
test-tube rack
2
95 percent ethanol
2
ethyl acetate/acetic acid solvent (95 percent ethyl acetate; 5
percent glacial acetic acid)
2
Pasteur pipette
2
tweezers
