CI NO 25380;CI 25380;DIRECT RED 75 (C.I. 25380);SIRIUS ROSE BB, FOR MICROSCOPY;Direct Fast Pink BK;Vital New Red (C.I. 25380);Aizen Primula Pink 2BLH special;tetrasodium 5,5'-[carbonylbis[imino(2-sulphonato-4,1-phenylene)azo]]bis(6-amino-4-hydroxynaphthalene-2-sulphonate)