Relating to or denoting an oxyacid of sulfur containing two sulfur atoms in S₂O₆H₂ form, or its salts and derivatives.
From 'di-' (two) + 'thio-' (sulfur) + '-onic' (adjective suffix for acids). A systematic chemistry nomenclature term.
Dithionic acid is unstable and decomposes readily, but its salts persist in certain geological formations—they're actually indicators of ancient oxidation environments and tell geologists about Earth's history.
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