The main component of flake alkali is sodium hydroxide. Sodium hydroxide (the main component of flake caustic soda), also known as caustic soda and caustic soda, plays an unusual role in our daily life and production. It is used to make pulp, soap, dye, rayon, aluminum, petroleum refining, cotton fabric finishing, food processing, wood processing, etc. Sodium hydroxide plays an important role in so many aspects. It can be seen that sodium hydroxide plays an important role in our life and production.

氢氧化钠在化学实验中的作用：除了能够当做溶液试剂外，氢氧化钠具有潮解性和吸水能力，是很好的碱性干燥剂。也可以吸收CO2等酸性气体(实验：S+O2=(点燃)SO2中，可利用这个特性，使用氢氧化钠吸收SO2气体)

Function of sodium hydroxide in chemical experiments: in addition to being used as solution reagent, sodium hydroxide has deliquescence and water absorption capacity, and is a good alkaline desiccant. It can also absorb acid gases such as CO2 (Experiment: in S + O2 = (ignition) SO2, sodium hydroxide can be used to absorb SO2 gas)

氢氧化钠在造纸工业中的作用：氢氧化钠在造纸工业中发挥着重要的作用。由于其碱性特质，它被用于煮和漂白纸页的过程。

The role of sodium hydroxide in the paper industry: sodium hydroxide plays an important role in the paper industry. Because of its alkaline properties, it is used in the process of cooking and bleaching paper.

氢氧化钠在水处理中的作用：氢氧化钠被广泛应用于水处理。在污水处理厂，氢氧化钠可以通过中和反应减小水的硬度。在工业领域，是离子交换树脂再生的再生剂。氢氧化钠具有强碱性，且在水中具有相对高的可溶性。由于烧碱为液态，所以容易衡量用量，被方便的使用在水处理的各个领域。

Function of sodium hydroxide in water treatment: sodium hydroxide is widely used in water treatment. In wastewater treatment plant, sodium hydroxide can reduce the hardness of water by neutralization reaction. In the industrial field, it is the regeneration agent of ion exchange resin regeneration. Sodium hydroxide has strong alkalinity and relatively high solubility in water. Since caustic soda is liquid, it is easy to measure the amount of caustic soda and is convenient to use in various fields of water treatment.

氢氧化钠被使用在水处理方面的如下课题：水的硬度;调节水的pH值;对废水进行中和;离子交换树脂的再生;通过沉淀水中重金属离子。

Sodium hydroxide is used in the following topics of water treatment: eliminating the hardness of water; adjusting the pH value of water; neutralizing wastewater; regenerating ion exchange resin; eliminating heavy metal ions in water by precipitation.

洗涤用品

Washing supplies

肥皂：制造肥皂是烧碱更古老和更广泛的用途，在制造肥皂的过程中，烧碱被用来中和脂肪酸。

Soap: making soap is the oldest and most extensive use of caustic soda. In the process of making soap, caustic soda is used to neutralize fatty acids.

洗涤剂：氢氧化钠被用于生产各种洗涤剂，甚如今的洗衣粉也是由大量的烧碱制造出来的，烧碱被用于硫化反应后对过剩的发烟硫酸进行中和。

Detergents: sodium hydroxide is used to produce various detergents, and even today's washing powder is made from a large amount of caustic soda, which is used to neutralize excess fuming sulfuric acid after vulcanization.