1、往样品当中添加进去澄清的石灰水，如果发现有偶白色沉淀的出现生成，那么说明氢氧化钾出现了变质的情况。

1. Add clarified Limewater into the sample. If even white precipitates are found, it indicates that the potassium hydroxide has deteriorated.

2、如果往样品当中滴加进去过量的稀盐酸发现有气泡的出现，那么说明产品已经出现了变质的情况。

2. If excessive dilute hydrochloric acid is added to the sample and bubbles are found, it indicates that the product has deteriorated.

3、还可以往样品当中添加进去氯化钡，如果发现有白色沉淀的生成，那么说明产品已经出现了变质的情况。

3. Barium chloride can also be added to the sample. If white precipitates are found, the product has deteriorated.

4、检查氢氧化钾部分变质的时候可以通过往当中加入进去过量氯化钡一直等到完全沉淀，等到沉淀已经静止之后取上层的清液放置在试管当中，然后往当中滴加无色的酚酞溶液，如果酚酞变红了那么就说明当中是有碱性物质的。

4. To check the partial deterioration of potassium hydroxide, you can add excessive Barium chloride into it until it is completely precipitated. After the precipitation has stopped, take the clear liquid on the upper layer and place it in the test tube, and then drop the colorless phenolphthalein solution into the middle. If the phenolphthalein turns red, it indicates that there are alkaline substances in it.

5、如果往当中加入进去过量氯化钡2:1，如果有白色沉淀的生成，那么就说明产品出现了部分变质的情况。

5. If excessive Barium chloride 2:1 is added into it, and white precipitate is generated, it indicates that the product has partially deteriorated.

6、加入无色酚酞如果无色酚酞不变色那么就说明已经是完全变质了。如果无色酚酞已经变红了那么就说明只是部分变质，其中还有一部分的产品是有一些效果的。

6. If colorless phenolphthalein does not change color, it indicates complete deterioration. If the colorless phenolphthalein has turned red, it indicates that it has only partially deteriorated, and there are also some products that have some effects.

上面介绍的就是氢氧化钾是否变质的检测方法，因为产品本身在变质之后是无法进行使用的，所以我们在经过检测之后发现已经变质那么需要及时的进行处理不再进行使用，还有就是在进行检测的时候需要注意一定不要随意的往当中添加其他的化学物质。更多相关事项就来我们网站http://chaonvhui.com咨询吧！

The above is the detection method for whether potassium hydroxide is deteriorated. Because the product itself cannot be used after deterioration, we need to deal with it in time and not use it again if we find that the product has deteriorated after detection. In addition, we need to pay attention not to add other chemicals randomly during detection. For more related matters, come to our website http://chaonvhui.com Consult!