英文名称:1,5-Naphthalenedisulfonicacid,3-[2-[4-[2-[4-[2-[1-hydroxy-7-[2-(2-hydroxy-6-sulfo-1-naphthalenyl)diazenyl]-3-sulfo-2-naphthalenyl]diazenyl]-6-sulfo-1-naphthalenyl]diazenyl]-1-naphthalenyl]diazenyl]-,sodium salt (1:5); 1,5-Naphthalenedisulfonicacid,3-[[4-[[4-[[1-hydroxy-7-[(2-hydroxy-6-sulfo-1-naphthalenyl)azo]-3-sulfo-2-naphthalenyl]azo]-6-sulfo-1-naphthalenyl]azo]-1-naphthalenyl]azo]-,pentasodium salt (9CI); C.I. Direct Black 75 (7CI); C.I. Direct Black 75,pentasod