氢氧化钾的化学式为KOH,是一种强碱。跟其他化学品一样，都有个“保质期”，并且它的“保质期”较短。这种说法源自于它的化学性质，因为它能够吸收空气中的水分跟二氧化碳，生产碳酸钾。因此，一旦保存不当，如没有对其进行密封储存，它就很容易变质。变质后碱性减弱，加上其成分已变，原定的化学反应也会随之而变，因此，原本的功能的也没办法发挥了。
　　The chemical formula of potassium hydroxide is Koh, which is a strong base. Like other chemicals, there is a "shelf life" and it has a shorter "shelf life". This is due to its chemical properties, because it can absorb water and carbon dioxide in the air and produce potassium carbonate. Therefore, once the storage is improper, if it is not sealed for storage, it is easy to deteriorate. After metamorphism, the alkalinity is weakened, and its composition has changed, so the original chemical reaction will change accordingly. Therefore, the original function can not be played.
　　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。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，属于国家管制品之一。

　　What's the treatment of expired potassium hydroxide? Is it the same as our garbage? The answer is No. In fact, the overdue treatment is mainly recycling. Because 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. The overdue recycling can not only protect the environment, save energy, drive the stable and sustainable development of social benefits, but also improve the efficiency of enterprises and save costs. However, companies operating overdue recycling need to have recycling qualification and certificates. Because potassium hydroxide is toxic and corrosive, it is one of the national pipe products.
　　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，回收价格受许多因素的影响，所以回收的价格并不固定。
　　If you want to engage in the recycling industry, you need to obtain relevant permission. Unlicensed companies are not allowed to recycle. In addition, the recycling price is affected by many factors, so the recycling price is not fixed.