论文部分内容阅读
问：如何配制无色澄清的氢氧化钾乙醇溶液？答：氢氧化钾乙醇溶液在电力用油的分析中用作测定酸值的标准试剂。它是用无水乙醇和分析纯的氢氧化钾配制而成。无水乙醇（Ｃ２Ｈ５ＯＨ）中含有醛，即使优级纯的无水乙醇中杂质醛含量也有约０．０５％，还有微量碳酸盐。醛在稀...
Q: How to prepare colorless and clear potassium hydroxide ethanol solution? A: The potassium hydroxide ethanol solution is used as a standard reagent for the determination of acid number in the analysis of electrical oil. It is formulated with absolute ethanol and analytical grade potassium hydroxide. Anhydrous ethanol (C2H5OH) contains aldehydes, even in superior pure absolute ethanol with about 0.05% aldehyde and trace amounts of carbonate. Aldehyde in the thin ...