Scientific name of sodium carbonate, also known as soda, alkaline ash, an important basic chemical raw materials, soda ash industry, the main product. Usually a white powder, easy to decompose at high temperatures, soluble in water, aqueous solution is alkaline. Soda ash is mainly used for the production of glass, such as flat glass, bottle glass, optical glass and high-level containers; in the chemical industry, for the Preparation of sodium, metal carbonates, bleaching agents, fillers, detergents, catalysts and dyes, etc.; in the metallurgical industry, for removal of sulfur and phosphorus, for dressing, and copper, lead, nickel, tin, uranium, aluminum and other metal production; in the ceramic industry, for the Preparation of refractory materials and glaze. In addition, the industrial gas desulfurization, industrial water treatment, metal fat, cellulose and paper production, soap manufacturing needs soda ash.