Congo Red

CAS: 573-58-0

Ref. 3B-C0550

Product Information

• Name: Congo Red
• Synonyms: Direct Red 28, 1-Naphthalenesulfonic acid, 3,3'-[[1,1'-biphenyl]-4,4'-diylbis(azo)]bis[4-amino-, disodium salt, 1-Naphthalenesulfonic acid, 3,3'-[[1,1'-biphenyl]-4,4'-diylbis(2,1-diazenediyl)]bis[4-amino-, sodium salt (1:2), 3,3'-[(1,1'-Biphenyl)-4',4'-diyl)bis(azo)]bis[4-amino-1-naphthalenesulfonic acid, disodium salt, 3,3'-[[1,1'-Bifenil]-4,4'-Diilbis(Azo)]Bis(4-Aminonaftaleno-1-Sulfonato) De Disodio, 3,3'-[[1,1'-Biphenyl]-4,4'-diylbis(azo)]bis(4-aminonaphtalene-1-sulfonate) de disodium, Atlantic Congo Red, Atul Congo Red, Azocard Red Congo, Benzo Congo Red, Brasilamina Congo 4B, Congo Red 4B, Congo Red 4BS, Congo Red 4BX, Congo Red CR, Congo Red H, Congo Red K, Congo Red L, Congo Red M, Congo Red N, Congo Red R, Congo Red RS, Congo Red Stain, Congo Red TS, Congo Red W, Congo Red WS, Congo Red sodium salt, Congo red (0.1% in water), Congo red (0.1% in water)[for titration], Congo red disodium salt, Cotton Red 4BC, Cotton Red 5B, Cotton Red L, Diacotton Congo Red, Dinatrium-3,3'-[[1,1'-biphenyl]-4,4'-diylbis(azo)]bis(4-aminonaphthalin-1-sulfonat), Direct Congo Red, Direct Red 28, Direct Red C, Direct Red DC-CF, Direct Red K, Direct Red R, Direct Scarlet 4B, Disodium 3,3'-[[1,1'-Biphenyl]-4,4'-Diylbis(Azo)]Bis(4-Aminonaphthalene-1-Sulphonate), Disodium 4-Amino-3-[4-[4-[(1-Amino-4-Sulfonato-2-Naphthyl)Azo]Phenyl]Phenyl]Azo-Naphthalene-1-Sulfonate, Erie Congo 4B, Haemomedical, Haemonorm, Hemorrhagyl, Hispamin Congo 4B, Kayaku Congo Red, Kongorot, Mitsui Congo Red, Peeramine Congo Red, Red K, Red K (dye), Sodium Diphenyl-Bis-{Naphthylamine) Sulfonate}, Solucongo, Sugai Congo Red, Tertrodirect Red C, Trisulfon Congo Red, Vondacel Red CL, disodium 3,3'-[biphenyl-4,4'-diyldi(E)diazene-2,1-diyl]bis(4-aminonaphthalene-1-sulfonate), C.I. Direct Red 28, disodium salt, C.I. Direct Red 28, C.I. Direct Red 28, disodium salt, Congo red, C.I. Direct Red 28, disodium salt (8CI), C.I. 22120
• Brand: TCI

Chemical properties

• Molecular weight: 696.66
• Formula: C₃₂H₂₂N₆Na₂O₆S₂
• Purity: >98.0%(HPLC)
• Color/Form: Dark red to Brown powder to crystal