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Sulfonate)
Sulfonic acid is a strong acid of the formula H-S(=0)(=O)-OH or H2SO3. Its anion and its salts are called sulfonates.
The sulfonic acid or sulfonate functional group -S(=0)(=O)-OH or -SO3H is found in many chemical compounds, e.g. certain detergents and dyes as well as in strongly acidic cation exchange resins.
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