Method for measuring the water content of a solid sample using K

Details Method for measuring the water content of a solid sample using K Method for measuring the water content of a solid sample using K

1986-04-10

1989-02-07

Richman, Barry S.

Chemistry: electrical and wave energy

Processes and products

436 42, 204405, G01N 3116, G01N 3318

Patent

active

048029572

ABSTRACT:
An electrolytic solution for Karl Fischer's coulometric titation and a method for measuring the water content of a sample using the same are disclosed. The electrolytic solution contains iodine or an iodide, sulfur dioxide, an amine and a solvent, wherein the amine is a pyridine derivative, imidazole or an imidazole derivative and the solvent is a mixture of (a) a polyhydric alcohol or an ether compound thereof, (b) methanol and (c) a halogenated hydrocarbon or an aromatic hydrocarbon. The measurement method achieves a high precision with reduced measurement time and is suitable for making water content measurements using a water content vaporization method.

REFERENCES:
patent: 4354853 (1982-10-01), Dahms
patent: 4368105 (1983-01-01), Muroi et al.
patent: 4378972 (1983-04-01), Scholz
patent: 4619900 (1986-10-01), Scholz

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