Stabilized aqueous diazo solutions

Details Stabilized aqueous diazo solutions Stabilized aqueous diazo solutions

C - Chemistry, Metallurgy

07

C

C07C 245/20 (2006.01) C07C 309/04 (2006.01) C10L 1/00 (2006.01) C10L 1/226 (2006.01) C10L 1/24 (2006.01) G01N 31/22 (2006.01)

Patent

CA 2266173

A stabilized aqueous solution of a diazo compound has the formula: (see.fig I) where X1 is selected from nitro and chloro, X2 is selected from nitro, chloro and nothing, and Y is an acid-derived anion. The solution has a pH of about 1.5 or below and a diazo concentration of about 2 wt% or less. The solution is useful as an extractant/developer for petroleum fuel markers.

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