Composition for the detection of electrophilic gases and methods

Details Composition for the detection of electrophilic gases and methods Composition for the detection of electrophilic gases and methods

1997-04-17

1998-07-21

Anthony, Joseph D.

Compositions

Preservative agents

Anti-corrosion

252189, 252964, 62125, 73 40, 73 407, B01J 1300, G01M 320

Patent

active

057831106

ABSTRACT:
There is provided a composition for the detection of an electrophilic gas, such as chlorodifluoromethane or carbon dioxide, which comprises a Lewis base capable of removing a proton from the gas or reacting therewith in a similar electrophilic manner; a dye capable of visibly indicating a color change on protonation or deprotonation; a solvent for the dye, the base and the gas; and a rheology modifier capable of producing a non-newtonian gel of all of these components which is sufficiently translucent to permit visual detection of change of color of the dye and of sufficient pseudoplasticity/thixotropy to provide adhesion to vertical and horizontal surfaces.

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