Karl Fischer reagent and its use

Details Karl Fischer reagent and its use Karl Fischer reagent and its use

1984-05-21

1988-02-16

Turk, Arnold

Chemistry: analytical and immunological testing

Determination of water

By use of a karl fischer reagent

204 1T, G01N 3318

Patent

active

047255528

ABSTRACT:
Improved Karl Fischer reagents of the two-component type are described which eliminate problems such as inaccurate results and false end-points during titrations to determine the water content of a sample. The two-component reagent includes a vessel solution and a titrant solution, where the sample is added to the vessel solution and is titrated with the titrant in order to determine the water content of the sample. The improved vessel solution is one containing an amine such as diethanolamine or imidazole, a reducing ion such as SO.sub.2, alcohol, and iodide in an amount between 0.002 and 0.4 mol/liter. The titrant is an iodine-containing solution.

REFERENCES:
patent: 2780601 (1957-02-01), Blomgren et al.
patent: 2967155 (1961-01-01), Blomgrene et al.
patent: 4354853 (1982-10-01), Dahms
patent: 4368105 (1983-01-01), Muroi et al.
patent: 4378972 (1983-04-01), Scholz
patent: 4429048 (1984-01-01), Scholz

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