电位滴定法测量稳定剂的银盐溶度积和酸离解常数

doi:10.7517/j.issn.1674-0475.2001.04.274

影像科学与光化学 ›› 2001, Vol. 19 ›› Issue (4): 274-280.DOI: 10.7517/j.issn.1674-0475.2001.04.274

电位滴定法测量稳定剂的银盐溶度积和酸离解常数

刘晓晖, 黎源, 黄德音

上海交通大学化学化工学院, 上海200240

收稿日期:2000-12-26 修回日期:2001-05-23 出版日期:2001-11-20 发布日期:2001-11-20
通讯作者: 黄德音
基金资助:
乐凯胶片公司资助项目

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

LIU Xiao-hui, LI Yuan, HUANG De-yin

Institute of Chemistry and Chemical Engineering, Shanghai Jiaotong University, Shanghai 200240, P.R. China

Received:2000-12-26 Revised:2001-05-23 Online:2001-11-20 Published:2001-11-20

摘要/Abstract

摘要： 应用电位滴定法测量了烷基巯基四氮茚等一系列感光乳剂稳定剂的银盐溶度积和酸离解常数,其中有些化合物的常数属首次报道;所得数据表明:含巯基的四氮茚的银盐溶解度小于4-羟基-1,3,3a,7-四氮茚类化合物.同时应用Harmmett方程考察了感光乳剂稳定剂或防灰雾剂的性质,结果表明:从苯衍生物导出的σ值也可应用于预测杂环化合物的某些特性.

关键词: 电位滴定法, 稳定剂, 银盐溶度积, 酸离解常数

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

中图分类号:

O644

刘晓晖, 黎源, 黄德音. 电位滴定法测量稳定剂的银盐溶度积和酸离解常数[J]. 影像科学与光化学, 2001, 19(4): 274-280.

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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电位滴定法测量稳定剂的银盐溶度积和酸离解常数

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

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电位滴定法测量稳定剂的银盐溶度积和酸离解常数

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

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