1-Naphthalenol,4-(1-naphthalenylazo)- (9CI); C.I. Solvent Brown 5 (7CI,8CI); Sudan Brown(6CI); 4-(1-Naphthylazo)-1-naphthol; C.I. 12020; Fast Oil Brown S; Fat Brownreddish; Grasal Dark Brown N; Grasan Dark Brown MC; Oil Brown; Oil Brown D; OilBrown G; Oil Brown NN; Oil Brown R; Oil Brown S; Oleal Brown 3B; Oleosol BrownB; Resinol Brown 2B; Silotras Brown TBB; Solvent Brown 5; Sudan Brown BB