Currently, the main types of soda ash products in China are red barrel alkali, soda ash flakes, and yellow soda ash, with a mass fraction of Na2S of 60%. These products have a single variety and high impurity content, far from meeting the special requirements of industries such as advanced leather production, pharmaceuticals, and food, as well as some modern high-tech fields. At the same time, with China's accession to the WTO and the increasing stability of soda ash exports, there is an urgent need for the development of serialized, refined, and high value-added soda ash products.

In response to the recent domestic and international demand for soda ash, our company not only possesses rich experience in producing reagent-grade white sodium sulfide nonahydrate, but also has developed a new product: white high-purity sodium sulfide pentahydrate with uniform crystal particles, stable quality, and extremely low impurity content. Its characteristics include extremely low impurity content, especially a significantly lower content of Na2S2O3 compared to current products, and relatively stable quality, which is not prone to deliquescence and oxidation. In addition, the color of our product is white, deviating from the yellow and red colors of existing soda ash. This not only meets the special requirements of modern high-tech development for sodium sulfide, but also serves as an excellent intermediate for anhydrous sodium sulfide.