在很多的化学实验中都需要一个无水的环境，这里的无水包括环境、原料等因素，环境很好理解，只需使用干燥剂即可完成，而原料中的水分子又该如何去除呢？就以使用氢氧化钾除水纯化二氧六环为例，给大家介绍一下使用氢氧化钾除水的方法！

In many chemical experiments, we need an anhydrous environment. The anhydrous environment here includes environment, raw materials and other factors. The environment is well understood, and it can be completed only by using desiccant. How can the water molecules in the raw materials be removed? Take the purification of dioxane by using potassium hydroxide as an example, let me introduce the method of using potassium hydroxide to remove water!

二氧六环：沸点101.5℃，熔点12℃，折光率1.4424，相对密度1.0336。二氧六环能与水任意混合，常含有少量二乙醇缩醛与水，久贮的二氧六环可能含有过氧化物（鉴定和除去参阅乙醚）。

Dioxane: boiling point 101.5 ℃, melting point 12 ℃, refractive index 1.4424, relative density 1.0336. Dioxane can be mixed with water at will, and often contains a small amount of diethanol acetal and water. Dioxane stored for a long time may contain peroxide (refer to ether for identification and removal).

二氧六环的纯化方法，在500mL二氧六环中加入8mL浓盐酸和50mL水的溶液，回流6~10h，在回流过程中，慢慢通入氮气以除去生成的乙醛。

Purification method of dioxane: add 8ml of concentrated hydrochloric acid and 50ml of water to 500ml of dioxane, and refluxe for 6-10h. During the refluxing process, slowly introduce nitrogen to remove the acetaldehyde formed.

冷却后，加入固体氢氧化钾，直到不能再溶解为止，分去水层，再用固体氢氧化钾干燥24h。然后过滤，在金属钠存在下加热回流8~12h，后在金属钠存在下蒸馏，压入饥丝密封保存。精制过的1，4‐二氧环己烷应当避免与空气接触。

After cooling, add solid potassium hydroxide until it cannot be dissolved again, separate the water layer, and then dry it with solid potassium hydroxide for 24h. Then filter, heat and reflux in the presence of metal sodium for 8-12h, distill in the presence of metal sodium, press into hungry silk and seal for storage. The refined 1,4 ‐ dioxane should not be in contact with air.

此外 氢氧化钾的生产方法以及用途的内容，在介绍这部分内容前，要对氢氧化钾有一定的了解，什么是氢氧化钾呢？氢氧化钾是一种白色固体物质，属于强碱，腐蚀性强。易溶于水。

In addition, the production method and use of potassium hydroxide. Before introducing this part, we should first have a certain understanding of potassium hydroxide. What is potassium hydroxide? Potassium hydroxide is a white solid substance, which is a strong alkali and highly corrosive. Soluble in water.

在空气中易吸收二氧化碳和水分，致使变质。通常用电解氯化钾溶液，或将碳酸钾和石灰乳反应而得。用于制取钾盐和钾肥皂，还可作干燥剂等。

It is easy to absorb carbon dioxide and water in the air, resulting in deterioration. It is usually obtained by electrolysis of potassium chloride solution or reaction of potassium carbonate and lime milk. It is used to make potassium salt and potassium soap, and also as a desiccant.

使用氢氧化钾除水纯化二氧六环的过程相关内容就讲解到这里了，您对此有什么疑惑需要解答的话，欢迎来我们网站http://www.jinhao360.com进行咨询。

This is all about the process of removing water and purifying dioxane with potassium hydroxide. If you have any questions or need to answer, please come to our website http://www.jinhao360.com Consult.