C.I.28250;Direct Red 121;C.I.Direct Red 121;Benzamin Bordeaux FB;Phenazo Fast Bordeaux FBL;Fenamin Diazo Bordeaux FBL;Direct red 121 (C.I. 28250);C.I.Direct Red 121:C.I.28250;disodium 7-[(4-aminobenzoyl)amino]-4-hydroxy-3-[[3-methyl-4-[(3-sulphonatophenyl)azo]phenyl]azo]naphthalene-2-sulphonate;7-[(4-Aminobenzoyl)amino]-4-hydroxy-3-[[3-methyl-4-[(3-sodiosulfophenyl)azo]phenyl]azo]naphthalene-2-sulfonic acid sodium salt
3-Aminobenzenesulfonic acid diazo, and a coupling m-Toluidine
, its product to diazo, and 7-(4-Aminobenzamido)-4-hydroxynaphthalene-2-sulfonic acid coupling.
Properties and Applications
red to blue light Claret. For bright red is soluble in water, soluble in ethanol for product red. The strong sulfuric acid in blue, diluted red for brown. The dye solution to join strong hydrochloric acid for red light brown; Add thick sodium hydroxide solution for purplish red color, have precipitation
