Reactions of Ozone with 1-(<i>m</i>-Substituted phenylazo)-2-naphthol-6-sulfonic Acids in Aqueous Solutions
作者:Yasuo Onari
DOI:10.1246/bcsj.58.2526
日期:1985.9
The substituent effect on the ozone decoloration reactions of 1-(m-substituted phenylazo)-2-naphthol-6-sulfonic acids (PANSA) in aqueous solutions was investigated. Both the acidities of PANSA and the variation of the ozone decoloration rates of them increased compared to those of the corresponding 1-(m-substituted phenylazo)-2-naphthol-3,6-disulfonic acids (PANDSA). The relationships between the decoloration
研究了取代基对水溶液中 1-(m-取代苯基偶氮)-2-萘酚-6-磺酸 (PANSA) 的臭氧脱色反应的影响。PANSA 的酸度和臭氧脱色率的变化与相应的 1-(m-取代苯基偶氮)-2-萘酚-3,6-二磺酸 (PANDSA) 相比均有所增加。然而,脱色率与染料碱度指数(pKOH和σm值)之间的关系表明这两个系列染料的数据具有几乎相同的特征,PANSA的臭氧脱色反应似乎是通过与 PANDSA 的机制几乎相同。染料的酮-烯醇比随臭氧脱色的变化表明脱色率可能随着其酮-烯醇比降低率的增加而增加。在这些反应中最终产生的主要有机产物似乎很可能是草酸。