1-Naphthalenesulfonic acid, 4-((4-hydroxy-1-naphthalenyl)azo)-, monosodium salt 6409-10-5 Acid Brown RN Acid Chrome Brown RG Acid Leather Brown RN C.I. 14625 C.I. Acid Brown 6 (VAN) C.I. Acid Brown 6, monosodium salt (8CI) EINECS 229-078-6 Eriosin Brown RN Fast Brown R Fenazo Brown F Leather Brown NR NSC 9606 Naphthalene Brown R Naphthylamine Brown Naphthylamine Brown F Sodium 4-((4-hydroxynaphthyl)azo)naphthalenesulphonate Tertracid Brown C