For the knowledge of the process guarantee of potassium hydroxide, when checking the deterioration of some products, you can add excess potassium hydroxide into it until it is completely precipitated. After the precipitation has stopped, take the upper clear liquid and place it in the test, and then drop colorless phenolphthalein solution into it. If phenolphthalein turns red, it indicates that there are alkaline substances in it. Through this article, we have a simple understanding of potassium hydroxide

1、保證加氫反應和氧化反應工作液的pH值。蒽醌法生產雙氧水時，工作液的加氫是在堿性條件下進行的。加氫液的氧化反應和雙氧水的萃取需要在酸性條件下進行。當氧化液變為堿性時，雙氧水會引起事故。

1. Ensure the pH value of the working solution of hydrogenation reaction and oxidation reaction. In the production of hydrogen peroxide by anthraquinone method, the hydrogenation of working solution is carried out under alkaline conditions. The oxidation reaction of hydrogenation solution and the extraction of hydrogen peroxide need to be carried out under acidic conditions. When the oxidizing liquid becomes alkaline, hydrogen peroxide will cause accidents.

2、改進堿處理工藝。當堿處理過程出現異常時，氣體會帶出塔內部分堿液。如果分離器沒有完全分離，工作液的堿度可達正常指示值的數百倍。

2. Improve the alkali treatment process. When the alkali treatment process is abnormal, the gas will be brought out of the tower to separate the alkali liquor. If the separator is not completely separated, the alkalinity of the working fluid can reach hundreds of times of the normal indicated value.

3、嚴格控制氧化廢氣中的氧含量。氧化廢氣含有可燃氣體。在制造過程中，混合廢氣中的氧濃度會超過百分之15，可形成爆性氣體混合物。因此，嚴格控制廢氣中的可燃氣體和氧氣含量是我們認真考慮的問題。生產中一般用氮氣稀釋氧化廢氣，氧含量控制在百分之十以下。

3. Strictly control the oxygen content in the oxidation waste gas. The oxidation waste gas contains combustible gas. In the manufacturing process, the oxygen concentration in the mixed exhaust gas will exceed 15%, which can form an explosive gas mixture. Therefore, strict control of combustible gas and oxygen content in waste gas is a problem we seriously consider. In production, nitrogen is generally used to dilute the oxidation waste gas, and the oxygen content is controlled below 10%.