Electrolytic solution for Karl Fischer's coulometric titration a

Details Electrolytic solution for Karl Fischer's coulometric titration a Electrolytic solution for Karl Fischer's coulometric titration a

1991-05-23

1993-02-16

Rollins, John W.

Chemistry: analytical and immunological testing

Determination of water

By use of a karl fischer reagent

G01N 3318

Patent

active

051871017

ABSTRACT:
An electrolytic solution for Karl Fischer's coulometric titration comprising a iodide ion, sulfur dioxide, a basic compound and a solvent, and a method for measuring a water content using the same are disclosed. In the electrolytic solution, the basic compound is a mixture comprising an amino alcohol and a compound represented by formula (I): ##STR1## wherein n represents an integer of from 1 to 3, the amino alcohol is present at a molar ratio of not more than 1 to sulfur dioxide, and the amino alcohol and compound represented by formula (I) is present at a total molar ratio of from 1 to 5 to sulfur dioxide. The electrolytic solution is free from a pyridine odor, applicable either as an anolyte or as a catholyte, and capable of considerably reducing time required for water content measurement.

REFERENCES:
patent: 2967155 (1961-01-01), Blomgren et al.
patent: 4725552 (1988-02-01), Dahms

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