Monograph - Metrohm

pK Bvalues of some selected bases8 pK B values of some selected basesAcridine .............................................. 9.89m-Aminobenzoic acid ...................... 10.92o-Aminobenzoic acid ....................... 11.85p-Aminobenzoic acid ....................... 11.64Ammonia ............................................ 4.75Aniline ................................................ 9.42Benzidine 1 st step ............................... 9.30Benzidine 2 nd step ............................ 10.37Benzimidazole .................................... 8.47Benzylamine ...................................... 4.62Brucine ............................................... 3.10Caffeine ............................................ 13.39Collidine ............................................. 6.69Cyclohexylamine ................................ 3.36Diethanolamine .................................. 5.12Diethylamine ...................................... 3.00Dimethylamine ................................... 3.30Diphenylamine ................................... 8.79Ethanolamine ..................................... 4.56Ethylamine ......................................... 3.33Ethylenediamine 1 st step .................... 3.91Ethylenediamine 2 nd step ................... 7.00Imidazole ............................................ 7.00Methylamine ...................................... 3.36α-Naphthylamine ............................. 10.08o-Nitroaniline .................................... 14.13o-Phenylenediamine 1 st step ............. 9.53o-Phenylenediamine 2 nd step .............. >122-Picoline ........................................... 7.52Piperazine 1 st step ............................. 4.18Piperazine 2 nd step ............................. 8.32Piperidine ........................................... 2.80n-Propylamine .................................... 3.42Pyridine .............................................. 8.81Pyrimidine .......................................... 1.30Quinine 1 st step .................................. 6.66Quinine 2 nd step ................................. 9.48o-Toluidine .......................................... 9.61Triethanolamine ................................. 6.23Triethylamine ...................................... 3.28Trimethylamine ................................... 4.20Urea ................................................. 13.80Non-aqueous titration of acids and bases with potentiometric endpoint indication 15