AMMONIUM XYLENE SULFONATE;3,4-Dimethylbenzenesulfonic acid ammonium salt;NAXONATE 4AX;ammonium xylenesulphonate ;Xylenesulfonic acid, ammonium salt;Benzenesulfonic acid, dimethyl-, ammonium salt;XYLENESULFONATE,AMMONIUMSALT;dimethyl-benzenesulfonic acid ammonium salt