CI 18736;ACIDRED180;C-WR Orange 8;C.I.Acid Red 180;Chrome Intra Red R;C.I.Acid Red 180:C.I.18736;Chromate,bis[5-chloro-3-[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-2-hydroxybenzenesulfonato]-,disodium hydrogen;Chromate, bis[5-chloro-3-[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-2-hydroxybenzenesulfonato ]-, disodium hydrogen;disodium hydrogen bis[5-chloro-3-[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-2-hydroxybenzenesulphonato(3-)]chromate(3-);Chromate(3-), bis[5-chloro-3-[(4,5-dihydro- 3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-2 -hydroxybenzenesulfonato(3-)]-, disodium hydrogen
3-Amino-5-chloro-2-hydroxybenzenesulfonic acid diazo, and 3-Methyl-1-phenyl-1H-pyrazol-5(4H)-one coupling, and then in water solution and formic acid chromium heating, in 125 ° C keep 30 to 40 minutes to form chromium complex.
Properties and Applications
red. Soluble in water, ethanol, acetone, insoluble in toluene. The strong sulfuric acid in the dark for the light yellow. In nitric acid for yellow in red.
