1-Naphthalenesulfonic acid, 5-amino-6-[(4-nitrophenyl)azo]-, monosodium salt 1-Naphthalenesulfonic acid, 5-amino-6-[(p-nitrophenyl)azo]-, sodium salt 6950-60-3 Archil Substitute 3VN C.I. 13365 NSC65822