Ethanol sensitive solid

Details Ethanol sensitive solid Ethanol sensitive solid

1986-03-13

1988-12-13

Castel, Benoit

Chemistry: analytical and immunological testing

Oxygen containing

Hydroxyl containing

436166, 436900, 422 56, 422 85, G01N 3122, G01N 33497

Patent

active

047910658

ABSTRACT:
This invention is an ethanol sensitive solid useful for the colorimetric determination of ethyl alcohol in human breath samples. The solid is prepared by wetting silica gel with an acidic solution of a chromium(VI) salt and then heating to substantially dehydrate the material. The solid so prepared will change color from a deep orange to blue-green in the presence of alcohol. By packing the solid into a transparent tube and passing a known volume of breath sample through it, the blood alcohol content of the user may be estimated by measuring the color-changed portion of the packed tube.

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Be Sure.TM. 10-Second Breath Alcohol Test Device Package, Viking Industries, Inc., Medpro Division.

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