Direct Red 28

CAS: 573-58-0

Ref. 3D-FD03839

Product Information

• Name: Direct Red 28
• Synonyms: 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)

Description

Direct Red 28 is a dye that can be used in wastewater treatment. It can be adsorbed onto activated sludge, which reduces the amount of sludge needing to be treated. Direct Red 28 reacts with hydrogen peroxide to form a fluorescent derivative that has antimicrobial properties. Direct Red 28 also has been shown to have an effect on the enzyme activities of kidney bean extract and to inhibit the growth of bacteria in model systems. This dye is not toxic for body formation. However, it can react with potassium dichromate and hl-60 cells, which may lead to side effects such as skin irritation.

• Brand: Biosynth

Chemical properties

• Molecular weight: 698.68 g/mol
• Formula: C₃₂H₂₄N₆O₆S₂·2Na
• Purity: Min. 95%
• Color/Form: Red Powder