The coulometric titration of acids and bases in dimethylsulfoxide media

M. Bos; S.T. IJpma; E.A.M.F. Dahmen

doi:10.1016/S0003-2670(01)84629-8

The coulometric titration of acids and bases in dimethylsulfoxide media

M. Bos, S.T. IJpma, E.A.M.F. Dahmen

Research output: Contribution to journal › Article › Academic

9 Citations (Scopus)

78 Downloads (Pure)

Abstract

The coulometric titration of 20–200 μeq of acids and bases in DMSO media is described. In the titration of bases, the electro-oxidation of hydrogen at a platinized platinum electrode is used as the source of protons. The conditions for 100 % current efficiency at this electrode are low current density to avoid passivity and regular treatment of the electrode with potassium dichromate—sulfuric acid to remove a poisoning sulfide layer. The accuracy of the titrations is better than ±1 %. Very weak acids like phenols (pKa (DMSO) ≈16) can be titrated successfully. Tris(hydroxymethyl)aminomethane is the weakest base titrated.

Original language	Undefined
Pages (from-to)	39-47
Journal	Analytica chimica acta
Volume	83
DOIs	https://doi.org/10.1016/S0003-2670(01)84629-8
Publication status	Published - 1976

Keywords

IR-68088

Access to Document

10.1016/S0003-2670(01)84629-8

Bos76coulometric
open

Cite this

@article{2601cef36d6849aba63a304aa58e6bb6,

title = "The coulometric titration of acids and bases in dimethylsulfoxide media",

abstract = "The coulometric titration of 20–200 μeq of acids and bases in DMSO media is described. In the titration of bases, the electro-oxidation of hydrogen at a platinized platinum electrode is used as the source of protons. The conditions for 100 % current efficiency at this electrode are low current density to avoid passivity and regular treatment of the electrode with potassium dichromate—sulfuric acid to remove a poisoning sulfide layer. The accuracy of the titrations is better than ±1 %. Very weak acids like phenols (pKa (DMSO) ≈16) can be titrated successfully. Tris(hydroxymethyl)aminomethane is the weakest base titrated.",

keywords = "IR-68088",

author = "M. Bos and S.T. IJpma and E.A.M.F. Dahmen",

year = "1976",

doi = "10.1016/S0003-2670(01)84629-8",

language = "Undefined",

volume = "83",

pages = "39--47",

journal = "Analytica chimica acta",

issn = "0003-2670",

publisher = "Elsevier",

}

TY - JOUR

T1 - The coulometric titration of acids and bases in dimethylsulfoxide media

AU - Bos, M.

AU - IJpma, S.T.

AU - Dahmen, E.A.M.F.

PY - 1976

Y1 - 1976

N2 - The coulometric titration of 20–200 μeq of acids and bases in DMSO media is described. In the titration of bases, the electro-oxidation of hydrogen at a platinized platinum electrode is used as the source of protons. The conditions for 100 % current efficiency at this electrode are low current density to avoid passivity and regular treatment of the electrode with potassium dichromate—sulfuric acid to remove a poisoning sulfide layer. The accuracy of the titrations is better than ±1 %. Very weak acids like phenols (pKa (DMSO) ≈16) can be titrated successfully. Tris(hydroxymethyl)aminomethane is the weakest base titrated.

AB - The coulometric titration of 20–200 μeq of acids and bases in DMSO media is described. In the titration of bases, the electro-oxidation of hydrogen at a platinized platinum electrode is used as the source of protons. The conditions for 100 % current efficiency at this electrode are low current density to avoid passivity and regular treatment of the electrode with potassium dichromate—sulfuric acid to remove a poisoning sulfide layer. The accuracy of the titrations is better than ±1 %. Very weak acids like phenols (pKa (DMSO) ≈16) can be titrated successfully. Tris(hydroxymethyl)aminomethane is the weakest base titrated.

KW - IR-68088

U2 - 10.1016/S0003-2670(01)84629-8

DO - 10.1016/S0003-2670(01)84629-8

M3 - Article

VL - 83

SP - 39

EP - 47

JO - Analytica chimica acta

JF - Analytica chimica acta

SN - 0003-2670

ER -