Reagents – create a TABLE of all chemicals for the experiment with physical (including, but not limited to, molecular weight, melting and boiling point, flash point, density, solubility, …) and chemical properties, especially toxicity and safety concerns.
Experimental
You will prepare 1 mL of 1% (m/v) solutions for each analgesic standard:
Caffeine in ethanol
Aspirin in methyl tert-butyl ether (MTBE)
Acetaminophen in MTBE
Ibuprofen in MTBE
8:1:1 MTBE: ethyl acetate:methanol mixture
6:3:1 MTBE:ethyl acetate:methanol mixture.
3:2 MTBE:ethyl acetate
Acetonitrile
4:1 acetonitrile:ethyl acetate
| M.W(g/mol) | M.P. (0C) | B.P. (0C) | F.P.(0C) | Density(g/mL) | Toxicity | |
| Caffeine | 194.19 | 235 to 238 | -- | -- | 1.23 | Drug |
| Ethanol | 46.07 | -144.14 | 78.24 | 12.78 | 0.7893 | Flammable and irritant |
| Aspirin | 180.157 | 135 | 140 (decomposes) | -- | 1.4 | Drug |
| Acetaminophen | 151.163 | 169 | 420 | -- | 1.263 | Drug |
| Ibuprofen | 206.29 | 75 to 78 | 157 | -- | 1.03 | Drug |
| MTBE | 88.15 | -109 | 55.2 | -33 | 0.7404 | Flammable |
| Ethyl acetate | 88.11 | -83.6 | 77.1 | -4 | 0902 | Flammable and irritant |
| Methanol | 32.04 | -97.6 | 64.7 | 11 to 12 | 0.792 |
Toxic |
| Acetonitrile | 41.05 | -46 to -44 | 82 | 2.0 | 0.786 | IDLH 500 ppm |
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