Synonyms: Benzenesulfonicacid, 3,3'-[sulfonylbis[(2-nitro-4,1-phenylene)imino]]bis[6-(phenylamino)-,disodium salt (9CI); Benzenesulfonic acid,3,3'-[sulfonylbis[(2-nitro-p-phenylene)imino]]bis[6-anilino-, disodium salt(8CI); 4GW; Acid brown 13; Alphanol Fast Brown 3GL; C.I. 10410; C.I. Acid Brown13; Kayanol Milling Brown 4GW; Milling Brown GLW; Suminol Milling Brown 3G