Keywords: 2-naphthol orange.svg en 2-naphthol orange; Orange II; Acid orange 7; Tropaeolin OOO; Colacid Orange; Persian Orange; Fenazo Orange CAS 633-96-5; C I 15510 de 2-Naphtholorange; ß-Naphtholorange own Yikrazuul 2010-10-13 Azo dyes 2-naphthols Benzenesulfonic acids Sodium salts of organic compounds |