1,2-Benzenediamine, 4-nitro-, sulfate (1:1) 4-NITRO-1,2-BENZENEDIAMINE SULFATE 4-Nitro-o-phenylenediamine, sulfate 4-Nitrobenzene-1,2-diammonium sulphate 68239-82-7 EINECS 269-476-7 HSDB 6235