632-25-7 6939-89-5 Ammonium hydrogen 2-sulphobenzoate Ammonium o-carboxybenzenesulfonate Ammonium o-sulfobenzoic acid Benzoic acid, 2-sulfo-, monoammonium salt Benzoic acid, o-sulfo-, S-monoammonium salt (8CI) EINECS 230-077-8 NSC 38710