Similar names: 1,3-Naphthalenedisulfonic acid, 7-hydroxy-8-(1-naphthalenylazo)-, disodium salt (9CI); 2-Naphthol-6,8-disulfonic acid, 1-(1-naphthylazo)-, disodium salt (6CI); C.I. Acid Red 44 (7CI); C.I. Acid Red 44, disodium salt (8CI); Acid Leather Ponceau 6R; Acid Ponceau 6R; Acid Red 6A; Acidal Crystals Ponceau; Brilliant Crystal Scarlet; C.I. 16250; Colacid Red 6A; Crystal Ponceau; Crystal Ponceau 6R; Crystal Ponceau M 6R; Crystal Scarlet; Crystal Scarlet 6R; Crystal Tertracid Ponceau 6R; Kemacid Leather Ponceau 6R; Ponceau 6R; Ponceau 6R Crystals; Ponceau Cristallise Extra A Export; Ponceau Crystals 6R; Romexal Red 6A; Triacid Ponceau 6R