Pyridine-free Karl-Fischer reagent and a process for the determi

Details Pyridine-free Karl-Fischer reagent and a process for the determi Pyridine-free Karl-Fischer reagent and a process for the determi

1981-03-19

1988-05-31

Richman, Barry S.

Chemistry: analytical and immunological testing

Determination of water

By use of a karl fischer reagent

204 1T, G01N 3318

Patent

active

047481269

ABSTRACT:
A pyridine-free Karl-Fischer reagent for the determination of water which comprises (a) a solvent solution containing sulfur dioxide and an amine in a Karl-Fischer reagent solvent, the amine being functionally equivalent to pyridine in a Karl-Fischer reagent, and (b) a titrating agent containing iodine in a Karl-Fischer solvent; the molar ratio of amine to sulfur dioxide being about 2:1 to about 1:1 and the reagent being essentially free of pyridine.

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Smith et al, J. Amer. Chem. Soc. 61, 2407 (1939. (1956).
Johansson, Anal. Chem. 28, 1166 (1956).

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