Recent method of synthesizing 3,5-xylenol is sulpho alkaline fusion of dimethylbenzene,it is a very complicated procedure with serious pollution and low-pure products.
国内目前生产工艺是间二甲苯的磺化
法,该方法工艺过程复杂、污染严重,并且产
纯度不高。
Recent method of synthesizing 3,5-xylenol is sulpho alkaline fusion of dimethylbenzene,it is a very complicated procedure with serious pollution and low-pure products.
国内目前生产工艺是间二甲苯的磺化法,该方法工艺过程复杂、污染严重,并且产纯度不高。
By using sulpho acid to dissociate samples, using spectrophotometric method to determine micro-chrome in drainage sedimentary is very easy and simple with low cost.
采用王水分解样,分光光度法测定水系沉积物样中微量铬,方法简便,易操作,成本低。
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