Molecule of the Week

Sodium dithionite

November 2, 2009

Sodium dithionite (Na2S2O4) is a white crystalline salt that is also known by the somewhat confusing name sodium hydrosulfite. Its solutions are stable unless heated or acidified. It is produced by reducing NaHSO3 with zinc metal. Na2S2O4 has many industrial uses, including reduction of water-soluble organic compounds, primarily in the dyeing industry.

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