sulfonic acid

== English == === Alternative forms === sulphonic acid (British) === Noun === sulfonic acid (countable and uncountable, plural sulfonic acids) (American spelling) (chemistry) a strong inorganic acid, HSO2OH (chemistry) the univalent functional group -SO2OH (chemistry) any member of the class or organic acids containing this group; used in detergents, dyes and ion exchange resins ==== Derived terms ==== ==== Related terms ==== sulfonate