丙酮成品中主成份丙酮含量很高,用盐酸羟胺肟化法测定丙酮时,由于丙酮挥发性大,滴定终点不易准确掌握,因而误差较大。自一九六六年以来,我厂采用测定杂质乙醇和水的含量的方法,代替直接测定丙酮,效果良好。现将情况介绍如下。假设:丙酮%=100.00%-水%-乙醇%我们进行如下试验。用部标准方法测定丙酮[A]%,用乙酰氯法测定水[B]%,用比 Acetone finished acetone content of the main component is high, with hydroxylamine hydroxylamine hydrochloride method for the determination of acetone, due to volatile acetone, titration endpoint is not easy to accurately grasp, and thus greater error. Since 1966, our factory has adopted the method of determining the content of impurity ethanol and water instead of directly measuring acetone, and the effect is good. Now the situation is as follows. Assumptions: Acetone% = 100.00% - Water% - Ethanol% We conducted the following test. Acetone [A]% was measured by the standard method of department, water [B]% was measured by acetyl chloride method,