Potassium hydroxide chemical formula: Koh, soluble in water and ethanol, when dissolved, it will emit a lot of heat, with strong alkaline and corrosive, when it is exposed to the air, it is very easy to absorb water in the air and deliquescence, or absorb carbon dioxide in the air to generate potassium carbonate.

氢氧化钾乙醇溶液的主要用途一般是用作卤代烃发生消去反应，消去反应的定义是:有机化合物砸一定条件下，从一个分子中脱去一个小分子，而生成不饱和化合物的反应。化学实验上使用氢氧化钾乙醇液进行卤代烃发生消去反应而不是水溶液是因为乙醇能是溴乙烷充分溶解，而氢氧化钾水溶液反应会朝着水解的方向进行。其消去反应的化学式子为:

The main use of potassium hydroxide ethanol solution is generally used for the elimination reaction of halogenated hydrocarbons. The definition of elimination reaction is: under certain conditions, organic compounds remove a small molecule from a molecule and generate unsaturated compounds. In chemical experiments, potassium hydroxide ethanol solution is used for halogenated hydrocarbon elimination reaction instead of aqueous solution because ethanol can dissolve bromoethane fully, while potassium hydroxide aqueous solution reaction will proceed in the direction of hydrolysis. The chemical formula of the elimination reaction is as follows:

氢氧化钾具有强烈的腐蚀，人体吸入后会强烈刺激呼吸道，造成灼伤，皮肤和眼直接接触可引起灼伤，口服灼伤消化道，可致死。所以在使用或配置氢氧化钾溶液时需要小心操作，必要时佩戴相应多的防具，以防损伤。

Potassium hydroxide has strong corrosion, which will strongly stimulate the respiratory tract after inhalation, causing burns. Direct contact with skin and eyes can cause burns. Oral burning of digestive tract can cause death. Therefore, in the use or configuration of potassium hydroxide solution need to be careful operation, if necessary, wear corresponding more armor to prevent damage.