SynonymsDisodium phenyldibenzimidazoletetrasulfonate; Bisdisulizole (Neo Heliopan AP); 2,2′-(1,4-phenylene)bis-1H-Benzimidazole-5,7-disulfonic acid sodium salt Close Disodium phenyldibenzimidazoletetrasulfonate; Bisdisulizole (Neo Heliopan AP); 2,2′-(1,4-phenylene)bis-1H-Benzimidazole-5,7-disulfonic acid sodium salt Related products Bisdisulizole disodium M.F. M.W. 628.57; 2(22.99) CAT# AR-B05750 CAS# 180898-37-7 (Na salt)