Detecting agent

Details Detecting agent Detecting agent

1997-06-02

1998-11-10

McKane, Joseph K.

Compositions

Nonreactive analytical, testing, or indicating compositions

422 56, 422 86, 422 88, 436 84, 436183, 502241, 502259, 502260, 502405, 502439, G01N 2177, G01N 2180, G08B 17117

Patent

active

058338829

ABSTRACT:
A detecting agent for detecting at least one member selected from the group consisting of halogen gases and acidic gases which is contained in a gas, wherein the detecting agent comprises a discoloring component which comprises a hydroxide of a transition metal and Congo Red. Halogen gases and acidic gases which are contained in hydrogen, nitrogen, argon, or helium can be detected under a dry condition with a high sensitivity in accordance with the present invention.

REFERENCES:
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patent: 5030610 (1991-07-01), Sakata et al.
patent: 5171536 (1992-12-01), Evers
patent: 5267532 (1993-12-01), Franklin et al.
patent: 5665313 (1997-09-01), Shimada et al.
Database WPI, Section Ch, Week 7939, Derwent Publications Ltd., London GB; Class D15, AN 79-70679B of JP 54 104 638 A (Mitsubishi Heavy Ind. Co. Ltd.), 17 Aug. 1979.

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