Similar names: 1-Naphthalenesulfonic acid, 4,4'-[[2,4-dihydroxy-5-(hydroxymethyl)-1,3-phenylene]bis(2,1-diazenediyl)]bis-, sodium salt (1:2); 1-Naphthalenesulfonic acid, 4,4'-[[2,4-dihydroxy-5-(hydroxymethyl)-1,3-phenylene]bis(azo)]bis-, disodium salt (9CI); C.I. Food Brown 3 (7CI); C.I. Food Brown 3, disodium salt (8CI); 1538 Brown; Brown HT; C.I. 20285; Certicol Brown N Extra; Certicol Brown RS; Chocolate Brown HT; E 155; Edicol Brown HT; Hexacol Chocolate Brown HT