Understanding the chemical properties of anhydrous sodium sulfite (CAS 7757-83-7) is key to harnessing its full potential in industrial applications. This white crystalline powder, with the molecular formula Na₂SO₃, is an inorganic salt of sulfurous acid. Its most prominent characteristic is its strong reducing capability. It readily donates electrons, making it highly effective as an antioxidant and in facilitating chemical reductions. For instance, its reaction with dissolved oxygen to form sodium sulfate is a testament to its reducing power. The compound is soluble in water, with its aqueous solutions exhibiting an alkaline pH due to hydrolysis. While the anhydrous form is relatively stable, it can be oxidized by air over time, especially in the presence of moisture, to form sodium sulfate. High temperatures can lead to decomposition. Its reactivity also allows it to participate in sulfonation and sulfomethylation reactions, expanding its utility as a chemical intermediate. NINGBO INNO PHARMCHEM CO.,LTD. ensures that the anhydrous sodium sulfite we supply possesses the precise chemical properties required for demanding industrial processes. Our product quality guarantees reliable performance in your specific applications. To purchase anhydrous sodium sulfite with guaranteed chemical integrity, NINGBO INNO PHARMCHEM CO.,LTD. is your trusted source.