Synonyms: Chromate(3-),bis[3-[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-2-hydroxy-5-nitrobenzenesulfonato(3-)]-,trihydrogen; Chromate(3-), bis[3-[[4,5-dihydro-3-methyl-5-(oxo-kO)-1-phenyl-1H-pyrazol-4-yl]azo-kN1]-2-(hydroxy-kO)-5-nitrobenzenesulfonato(3-)]-,trihydrogen (9CI); Benzenesulfonic acid,3-[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-2-hydroxy-5-nitro-,chromium complex; C.I. 18745:1; C.I. 18745A; C.I. Solvent Orange 5; C.I.Solvent Orange 56; Neozapon Orange 245; Neozapon Orange G; Orange R 08; SolventOrange 5; Solvent Orange 56; Spirit Soluble Orange 2Zh; Zapon Orange 245