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China and the United States are the leading exporters of sodium phosphite, collectively accounting for the majority of global shipments, while India, South Korea, and Germany represent the largest importers. Sodium phosphite prices have remained relatively stable amid steady cross-border flows. Export volumes from China increased modestly in 2023–2024, while Indian imports rose by approximately 12% year-on-year, signaling growing regional demand in agrochemical applications.
Sodium phosphite is a white, crystalline, hygroscopic solid with no characteristic odor and low volatility; it decomposes before melting and is highly soluble in water. It is an inorganic phosphorus compound, specifically the sodium salt of phosphorous acid (H₃PO₃). Sodium phosphite serves primarily as a reducing agent and a key intermediate in the synthesis of organophosphorus compounds, including flame retardants and stabilizers. Its principal industrial applications are in agrochemicals—particularly as a fungicide active ingredient and plant health enhancer—and in water treatment formulations for corrosion and scale inhibition. It is also used in electroless nickel plating baths and as a precursor in the production of specialty phosphites for polymer stabilization.
This chemical is included in Fine Chemicals - Food Additives. See more about what is Sodium phosphite and Sodium phosphite SDS information.
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