C.I.27210
Orchil Red
Acid Red 170
C.I.Acid Red 170
C.I.Acid Red 170:C.I.27210
4-[[2-[(2,4-Dimethylphenyl)azo]-4,6-dimethylphenyl]azo]-3-hydroxy-2,7-naphthalenedisulfonic acid disodium salt
2-Amino-2′,3,4′,5-tetramethylazobenzene?diazo, coupled with 3-Hydroxynaphthalene-2,7-disulfonic acid.
Properties and Applications
red. Soluble in water for blue-ray red. In the dark for the strong sulfuric acid, after diluted red brown precipitation. In water solution to join hydrochloric acid, a palm red precipitate; Add sodium hydroxide dissolved the precipitation.
