论文部分内容阅读
在红色的品红溶液里通入二氧化硫气体,二氧化硫与品红的醌式结构发生了加成反应,生成加成物而褪色。这种加成物不稳定,加热分解逸出二氧化硫气体,又恢复原来的红色。
Sulfur dioxide gas is introduced into the red magenta solution. Sulfur dioxide reacts with the magenta quinone structure to generate an adduct that fades. This adduct is not stable, and it decomposes and dissipates sulphur dioxide gas, which restores the original red color.