Phosphorous acid is an important chemical raw material and pesticide intermediate. There are many manufacturing companies in my country.

Phosphorous acid is an inorganic compound with the chemical formula H3PO3. It appears as a white crystalline powder and is easily soluble in water and ethanol. It can be oxidized to orthophosphoric acid in the air and hydrolyzed to phosphite in water. It is highly acidic and hygroscopic. Strong, strong reducibility, and good performance in complexing metal ions.

The technical route for the production of phosphorous acid mainly includes the hydrolysis method, which refers to the method of preparing phosphorous acid using phosphorus trichloride as raw material through hydrolysis, steam refining, cooling and crystallization, etc.; the hydrochloric acid removal method refers to dissolving phosphorus trichloride in Concentrated hydrochloric acid is then removed through low-temperature evaporation to generate phosphorous acid; the phosphorus trioxide method refers to a method that uses phosphorus trioxide as raw material and reacts with water to generate phosphorous acid. At present, the hydrolysis method is the mainstream technology for the industrial production of phosphorous acid in my country.

Phosphorous acid is an important chemical raw material and pesticide intermediate. It can be used as a chemical raw material in the production of reducing agents, nylon antioxidants, plastic stabilizers, water treatment agents, synthetic fibers, phosphites, lithium iron phosphate cathode materials, etc. ; It can be used as a pesticide intermediate in the production of herbicides, fungicides, water stabilizers, organophosphorus pesticides, etc., and has a wide range of applications. Under the current background of continuous development in the application field of phosphorous acid, its market demand is increasing. According to the “China Phosphorous Acid Industry Market Monitoring and Future Development Prospects Research Report 2023-2027” released by the Industrial Research Center, In 2022, the domestic phosphorous acid market demand has reached 281,000 tons, a year-on-year increase of 8.7%, and the industry development prospects are good.

my country is the world’s major producer of phosphorous acid. The domestic companies in the phosphorous acid market mainly include Biphosphine Chemical, Taihe Technology, Chunming Chemical, Qingshuiyuan Technology, Tengming Chemical, Yangfan New Materials, Zhongyikehuan Chemical, Fengguang New Materials, Ocean life, etc. There are many domestic phosphorous acid production enterprises, but most of them are regional small and medium-sized enterprises with low production technology level and unstable product quality. They generally do not have the advantage of economies of scale. Therefore, in the future, local companies need to increase product innovation and improve production technology levels, promote the continuous improvement of the performance of domestic phosphorous acid products, and lay a good foundation for accelerating the occupation of more global market shares.

Industry AnalysisPersonnel said thatphosphorous acid is an important chemical raw material and pesticide intermediate. It plays an important role in the production of various materials, chemical additives and pesticides. Under the background of the continuous development of its application fields, Its market demand continues to increase, and the industry shows good development prospects. At the same time, as the number of domestic phosphorous acid production companies continues to increase, domestic production capacity has been continuously released, and my country has become the world’s major producer of phosphorous acid. However, there are still many domestic companies that do not have the advantages of economies of scale. Therefore, in the future, local phosphorous acid companies will need to speed up their technological improvement and occupy more global market shares.