Patent ID: 6080213
Filing Date: 2000-06-27
Classification: C07C,C10L,G01N

Abstract:
A stabilized aqueous solution consisting of between 0.01 and 2 wt % of a diazotized compound selected from the group consisting of 2-chloro-4-nitroaniline, 4-chloro-aniline and 2-nitro-aniline prepared by the process comprising:adding said diazotized compound to a solution consisting of an acid mixture of propanic acid and acetic acid in an amount between about 20 and about 35%, 15 wt % ammonium chloride, balance at least about 50 wt % water, in an amount sufficient to produce a concentration between 0.01 and 2 wt % diazotized compound based on total solution, providing a pH of from about 0.05 to about 1.5said aqueous solution having stability over a period of 34 weeks at room temperature.