2-Amino-5-nitrobenzenesulfonic acid ammonium salt 4346-51-4 Ammonium 2-amino-5-nitrobenzenesulphonate Benzenesulfonic acid, 2-amino-5-nitro-, ammonium salt Benzenesulfonic acid, 2-amino-5-nitro-, monoammonium salt EINECS 224-408-5 p-Nitroaniline-2-sulfonic acid, ammonium salt