2,2'-((4-((4-Nitrophenyl)azo)phenyl)imino)bisethanol 2734-52-3 C.I. DISPERSE RED 19 C.I. Disperse Red 19 EINECS 220-354-1 Ethanol, 2,2'-((4-((4-nitrophenyl)azo)phenyl)imino)bis- NSC 364364