Determination of microscopic dissociation constants of 3-hydroxy-alpha-(methylamino)methyl-benzenemethanol by a spectral deconvolution method.
Microscopic dissociation constants of 3-hydroxy-alpha-(methylamino)methyl-benzenemethanol have been calculated from the titration spectrophotomeric data (c = 3.8 x 10(-4) M. Ionic strength = 0.16; buffer system: H3BO3/KOH) by application of a spectral deconvolution method. The results found (pKa = 9.48; pKb = 9.71; pKc = 10.12 and pKd = 9.88) are in good concordance with those obtained from the conventional regression linear method (pKa = 9.45; pKb = 9.77; pKc = 10.14 and pKd = 9.81).
Quintero
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Departamento de Quimica Fisica, Facultad de Farmacia, Granada, Spain.
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Cabeza
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MC
Thomas
J
J
Alvarez
J M
JM
D055598:Chemical Phenomena; D002627:Chemistry, Physical; D010656:Phenylephrine / Q000032:analysis*; D013056:Spectrophotometry, Ultraviolet
D010656:Phenylephrine