Description

Disodium 3-((4′-((6-amino-1-hydroxy-3-sulphonato-2-naphthyl)azo)-3,3′-dimethoxy(1,1′-biphenyl)-4-yl)azo)-4-hydroxynaphthalene-1-sulphonate (CAS No. 3818-60-8) is a high-purity, synthetic azo dye classified as C.I. Direct Blue 168. This compound features a complex molecular structure (C₄₀H₂₉N₅Na₂O₁₀S₂) with dual sulfonate groups, enhancing its water solubility and binding affinity for cellulose fibers. Ideal for textile research, it serves as a vibrant blue dye with excellent lightfastness and wash resistance. Packaged in sealed, light-protected containers to ensure stability, this product is rigorously tested for consistency in absorbance spectra (λ_max ~590–610 nm) and low heavy metal content (<5 ppm). Suitable for industrial dyeing processes, histology staining, and as a reference standard for chromatographic analysis.

Properties

• CAS Number: 3818-60-8
• Complexity: 1580
• IUPAC Name: disodium;7-anilino-4-hydroxy-3-[4-[4-[(1-hydroxy-4-sulfonato-2-naphthyl)azo]-3-methoxy-phenyl]-2-methoxy-phenyl]azo-naphthalene-2-sulfonate
• InChI: InChI=1S/C40H31N5O10S2.2Na/c1-54-34-19-23(12-16-31(34)42-44-33-22-36(56(48,49)50)29-10-6-7-11-30(29)39(33)46)24-13-17-32(35(20-24)55-2)43-45-38-37(57(51,52)53)21-25-18-27(14-15-28(25)40(38)47)41-26-8-4-3-5-9-26;;/h3-22,41,46-47H,1-2H3,(H,48,49,50)(H,51,52,53);;/q;2*+1/p-2
• InChI Key: JCODDUJNTJDXSM-UHFFFAOYSA-L
• Exact Mass: 849.11512305
• Molecular Formula: C40H29N5Na2O10S2
• Molecular Weight: 849.8
• SMILES: COC1=C(C=CC(=C1)C2=CC(=C(C=C2)N=NC3=C(C=C4C=C(C=CC4=C3O)NC5=CC=CC=C5)S(=O)(=O)[O-])OC)N=NC6=C(C7=CC=CC=C7C(=C6)S(=O)(=O)[O-])O.[Na+].[Na+]
• Topological: 252
• Monoisotopic Mass: 849.11512305
• Synonyms: Disodium 3-[[4′-[[6-amino-1-hydroxy-3-sulphonato-2-naphthyl]azo]-3,3′-dimethoxy[1,1′-biphenyl]-4-yl]azo]-4-hydroxynaphthalene-1-sulphonate, Disodium 3-((4′-((6-amino-1-hydroxy-3-sulphonato-2-naphthyl)azo)-3,3′-dimethoxy(1,1′-biphenyl)-4-yl)azo)-4-hydroxynaphthalene-1-sulphonate, Disodium 3-[[4′-[(6-amino-1-hydroxy-3-sulphonato-2-naphthyl)azo]-3,3′-dimethoxy[1,1′-biphenyl]-4-yl]azo]-4-hydroxynaphthalene-1-sulphonate, 223-308-9, 229-250-0, 685-097-3, 3818-60-8, Disodium;7-anilino-4-hydroxy-3-[[4-[4-[(1-hydroxy-4-sulfonatonaphthalen-2-yl)diazenyl]-3-methoxyphenyl]-2-methoxyphenyl]diazenyl]naphthalene-2-sulfonate, C.I. Direct Blue 168, DTXSID101023951, EINECS 223-308-9, Disodium 3-((4′-((6-phenyl-1-hydroxy-3-sulphonato-2-naphthyl)azo)-3,3′-dimethoxy(1,1′-biphenyl)-4-yl)azo)-4-hydroxynaphthalene-1-sulphonate

This azo dye is primarily used in textile research for cotton and paper dyeing due to its strong affinity for cellulose. In biomedical applications, it may serve as a histological stain for cellular structures. Researchers also employ it as a chromatographic marker or UV-Vis reference compound in analytical method development.

Safety and Hazards

GHS Hazard Statements

• Not Classified
• Reported as not meeting GHS hazard criteria by 1 of 1 companies. For more detailed information, please visit ECHA C&L website.

Hazard Classes and Categories

• Not Classified

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