@ Chromogenic materials which react to give a color reaction when in the presence of a peroxide ROOR' decomposing to give a radical oxygen are unstable when dissolved to give working solutions for use in chromogenic reactions. Compositions containing in addition to the chromogenic material also a peroxide needed in the said reaction are also unstable, leading to premature appearance of color.
Stable chemical compositions containing chromogenic materials and stable compositions containing mixtures of chromogenic materials and peroxides are described, which can be used in chromogenic reactions after having been stored for long periods of time. Also described are stabilizing chemical compositions and methods for obtaining the said stable compositions.
致色材料在过氧化物的作用下会分解生成氧自由基,从而产生颜色反应,但这种材料在溶解成用于致色反应的工作溶液时是不稳定的。 除了致色材料外,还含有上述反应所需的过氧化物的组合物也是不稳定的,会导致颜色过早出现。 本文描述了含有致色材料的稳定
化学组合物以及含有致色材料和过氧化物混合物的稳定组合物,这些组合物经过长期储存后可用于致色反应。 本文还描述了稳定
化学组合物以及获得上述稳定组合物的方法。