Pyridine-free Karl Fischer reagent useful in determining water

Details Pyridine-free Karl Fischer reagent useful in determining water Pyridine-free Karl Fischer reagent useful in determining water

1981-12-21

1983-11-22

Padgett, Benjamin R.

Chemistry: analytical and immunological testing

Determination of water

By use of a karl fischer reagent

G01N 3116, G01N 2742, G01N 3318, C09K 300

Patent

active

044169973

ABSTRACT:
An essentially pyridine-free Karl Fischer reagent useful in the determination of water, comprises a dissolving agent containing sulfur dioxide and a pyridine substitute in a Karl Fischer solvent, and a titrating agent containing iodine in a Karl Fischer solvent, wherein the pyridine substitute is an alkali or alkaline earth metal benzoate or ammonia, and the reagent is essentially free of pyridine.

REFERENCES:
patent: 3974258 (1976-08-01), Poitevin et al.
patent: 4295990 (1981-10-01), Verbeek et al.
Verhoef et al., Analytica Chimica Acta, vol. 94, pp. 395-403, (1977).

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