1,1'-((Phenylmethylene)bis((2-ethoxy-4,1-phenylene)azo))bis(2-naphthalenol) 1,1'-((Phenylmethylene)bis((2-ethoxy-4,1-phenylene)azo))bis(2-naphthol) 2-Naphthalenol, 1,1'-((phenylmethylene)bis((2-ethoxy-4,1-phenylene)azo))bis- 72927-71-0 EINECS 277-019-8