Detecting agent
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United States of America Patent
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Nov 10, 1998
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N/A
app pub date -
Jun 2, 1997
filing date -
Aug 23, 1996
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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.
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