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| 72行目: | 72行目: | ||
| BoilingPtC = 178 | | BoilingPtC = 178 | ||
| Boiling_notes = [[sublimation (chemistry)|subl.]] | | Boiling_notes = [[sublimation (chemistry)|subl.]] | ||
| pKa = -0.13–1.22 protonated caffeine<ref name="pKa"/> | | pKa = -0.13–1.22 protonated caffeine<ref name="pKa">This is the pK<sub>a</sub> for protonated caffeine, given as a range of values included in {{cite book |title=Profiles of Drug Substances, Excipients and Related Methodology, volume 33: Critical Compilation of pK<sub>a</sub> Values for Pharmaceutical Substances |author=Harry G. Brittain, Richard J. Prankerd |publisher=Academic Press |year=2007 |isbn=0-12-260833-X |url=http://books.google.com/?id=D3vBu5Tx4XwC&pg=PT15&lpg=PT15}}</ref> | ||
| Dipole = 3.64 [[debye|D]] (calculated) | | Dipole = 3.64 [[debye|D]] (calculated) | ||