Basic properties of sulfite
Release time:
2025-06-05
According to the different metal ions, sulfites can be divided into normal salts (such as sodium sulfite and potassium sulfite) and acid salts (such as sodium bisulfite).
According to the different metal ions, sulfites can be divided into normal salts (such as sodium sulfite and potassium sulfite) and acid salts (such as sodium bisulfite).
Solubility: Except for alkali metal and ammonium sulfites that are easily soluble in water, other metal sulfites are usually slightly soluble in water. All acidic sulfites are easily soluble in water.
Redox: The valence of sulfur in sulfite is+4, which has strong reducibility and can be oxidized to sulfate by oxidants such as bromine water and acidified potassium permanganate solution. Meanwhile, under specific conditions, sulfites also exhibit certain oxidizing properties.
Thermal stability: Sulfites are easily decomposed when heated, producing sulfur dioxide and corresponding metal oxides.
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