Pyridine-free Karl-Fischer reagent and a process for the determination of water therewith
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United States of America Patent
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May 31, 1988
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N/A
app pub date -
Mar 19, 1981
filing date -
Mar 19, 1980
priority date (Note) -
Expired
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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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