THE MEASUREMENT OF pKsp AND pKa OF SALTS OF STABILIZERS BY POTENTIOMETRY TITRATION

doi:10.7517/j.issn.1674-0475.2001.04.274

Abstract

Abstract: The pK_sp and pK_a of photographic stabilizers and antifoggants measured in water at 25 ℃ by the method of potentiometry titration are discussed in this report. The constant of some compounds are reported for the first time. The results indicated that the pK_a of the tetrazole with SH group are less than TAI. The Hammett correlations of stabilizers and antifoggants are applied.

Key words: potentiometry titration, stabilizer, solubility production, dissociation constant

CLC Number:

O644

LIU Xiao-hui, LI Yuan, HUANG De-yin. THE MEASUREMENT OF pK_sp AND pK_a OF SALTS OF STABILIZERS BY POTENTIOMETRY TITRATION[J]. Imaging Science and Photochemistry, 2001, 19(4): 274-280.

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THE MEASUREMENT OF pK_sp AND pK_a OF SALTS OF STABILIZERS BY POTENTIOMETRY TITRATION

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