Compared with other alkaline products, the price of potassium hydroxide is higher than that of other alkaline products. This is also because its performance is very good. For example, it needs to be used in many cleaning products. It plays a main role in cleaning and does not harm the skin. However, because it is still alkaline, it is in progress When it is stored, there may be deterioration, so how can we identify whether it has deteriorated or not when we use it.

1、我們都知道堿性物質和酸性物質混合在一起的時候會進行中和反應，而這兩者在進行反應的過程當中是會產生鹽和水的，可是如果是變質的和酸性物質進行反映的是會有氣泡產生的，這種方法可以排除出來產品有沒有變質

1. We all know that alkaline substances and acidic substances will be neutralized when they are mixed together, and the two will produce salt and water during the reaction process. However, if it is deteriorated and acidic substances are reflected, there will be bubbles. This method can be used to exclude whether the product has deteriorated

2、還可以將氯化鋇溶液添加到產品當中進行攪拌，如果在攪拌之后出現沉淀物那么就表示氫氧化鉀已經變質。

2. Barium chloride solution can also be added to the product for stirring. If there is sediment after stirring, it means that the potassium hydroxide has deteriorated.

3、還可以先準備一杯已經飽和的片堿溶液，然后再將需要檢測的產品添加進去如果仍然可以溶解進去，那么說明這個溶解進去的可能是其他的物質了，如果無法溶解進去依然以沉淀的狀態存在的時候那么一般出現變質的可能性會小一些。

3. You can also prepare a cup of saturated caustic soda solution, and then add the product to be tested. If it can still be dissolved in, it means that other substances may be dissolved in it. If it can not be dissolved in and still exists in the precipitation state, the possibility of deterioration will be less.

上面介紹的就是判斷氫氧化鉀有沒有變質的幾種方法，其實很多的堿性物質在進行使用的時候即便是出現了變質也是不影響使用的，但是該產品因為比較廣泛的應用在很多的洗護用品當中，所以在進行使用的時候如果出現了變質的情況是非常影響正常使用的，甚可能會導致產品在進行使用的時候對皮膚產生一定的傷害。

The above is to judge whether potassium hydroxide has deteriorated several methods. In fact, many alkaline substances will not affect the use even when they are used. However, the product is widely used in many cleaning products, so if the deterioration occurs during the use, it will affect the normal use, even It may cause certain damage to the skin when the product is used.