The chemical formula of potassium hydroxide is Koh, which is a strong base. Like other chemicals, it has a "shelf life" and its "shelf life" is short. This statement comes from its chemical properties because it can absorb water and carbon dioxide in the air to produce potassium carbonate. Therefore, once it is stored improperly, if it is not sealed for storage, it is easy to deteriorate. After deterioration, the alkalinity is weakened, and its composition has changed, the original chemical reaction will also change. Therefore, the original function can not be brought into play.

那过期氢氧化钾处理方式是怎样的呢？是直接弃之不顾，跟我们的生活垃圾一样吗？答案是否定的。实际上，过期处理方式主要是回收。因为尽管过期了，它变质的产物是碳酸钾，这也是种基础化学品，也是可以有其他用途的。回收过期的不仅可以保护环境、节约能源、带动社会效益的稳定持续发展，还可以使企业公司的效益提高，节约成本。

What is the treatment of expired potassium hydroxide? Is it the same as our domestic garbage? The answer is No. In fact, the main method of expiration treatment is recycling. Although it has expired, the product of its deterioration is potassium carbonate, which is also a basic chemical and can be used for other purposes. Recycling expired can not only protect the environment, save energy and drive the stable and sustainable development of social benefits, but also improve the benefits of enterprises and companies and save costs.

但是经营过期回收的公司需要回收资质和证件，因为氢氧化钾具有毒性跟腐蚀性，属于管制品之一。想从事回收行业也须取得相关的允许，无证的公司是不允许进行回收的，另外，回收受许多因素的影响，所以回收的并不固定。

However, companies operating expired recycling need recycling qualifications and certificates, because potassium hydroxide is toxic and corrosive and belongs to one of the national managed products. If you want to engage in the recycling industry, you must also obtain relevant permission. Undocumented companies are not allowed to recycle. In addition, the recycling price is affected by many factors, so the recycling price is not fixed.