C.I.Acid Orange 51

CAS: 8003-88-1

Ref. 3D-FA41255

Product Information

• Name: C.I.Acid Orange 51
• Synonyms: 2-Naphthalenesulfonic acid, 5(or 8)-[[3-methyl-4-[[(4-methylphenyl)sulfonyl]oxy]phenyl]azo]-8(or 5)-[[4-[(4-nitro-2-sulfophenyl)amino]phenyl]azo]-, disodium salt, Acid Red Brown 5K, Acid orange 51, Baygenal Red Brown LNZR, Benzenesulfonic acid, 5(or 8)-(2-(3-methyl-4-(((4-methylphenyl)sulfonyl)oxy)phenyl)diazenyl)-8(or 5)-(2-(4-((4-nitro-2-sulfophenyl)amino)phenyl)diazenyl)-, sodium salt (1:2), Best Acid Milling Brown 5R, Covanyl Brown 5R, Disodium 5(Or 8)-(3-Methyl-4-(4-Methylphenylsulphonyloxy)Phenylazo)-8(Or 5)-4-(4-Nitro-2-Sulphophenylamino)Phenylazo)Naphthalene-2-Sulphonate, Erionyl Brown RXL, Eriosin Fast Brown RXL, Indacid Red 2B, Kayanol Milling Brown RX, Kenanthrol Brown R, Nylomine Acid Brown C-R, Sandolan Brown N 2RL, Suminol Milling Brown 5R, Telon Fast Copper Red RL, Triacid Fast Brown 5RN, disodium 8-[(E)-(3-methyl-4-{[(4-methylphenyl)sulfonyl]oxy}phenyl)diazenyl]-5-[(E)-{4-[(4-nitro-2-sulfonatophenyl)amino]phenyl}diazenyl]naphthalene-2-sulfonate, Acid Orange 51 (C.I.), C.I. Acid Orange 51, C.I. 26550

Description

C.I. Acid Orange 51 is a dye that is used in wastewater treatment and as an absorber in the textile industry. It has been shown to inhibit enzymatic reactions, such as saccharification of starch and cellulose, through cross-linking with fatty acids. C.I. Acid Orange 51 is also used for surface methodology, where it is adsorbed onto polymer film or activated charcoal to create a reactive surface for kinetic studies on organic compounds and their interactions with other molecules.
C.I. Acid Orange 51 can be produced by the oxidation of 2-methyl-5-(p-hydroxyphenyl)-1,3-dioxane with sodium hypochlorite in alkaline solution, followed by acidification with hydrochloric acid and extraction of the dye from the resulting reaction mixture using ethanol or acetone. The dye has a high affinity for fungal biomass and can be used to measure the amount of protein present in fungi grown on agar

• Brand: Biosynth

Chemical properties

• Molecular weight: 860.8 g/mol
• Formula: C₃₆H₂₆N₆O₁₁S₃Na
• Purity: Min. 95%