CAS 16143-79-6: Direct Blue 76

Description: Direct Blue 76, with the CAS number 16143-79-6, is a synthetic dye belonging to the class of azo dyes, which are characterized by the presence of one or more azo groups (-N=N-). This dye is primarily used in the textile industry for dyeing cellulose fibers, such as cotton, due to its excellent colorfastness and vibrant blue hue. Direct Blue 76 exhibits good solubility in water, making it suitable for various dyeing processes. Its chemical structure typically includes sulfonic acid groups, which enhance its solubility and affinity for fibers. In addition to textiles, it may also find applications in other areas, such as paper and leather industries. However, like many azo dyes, Direct Blue 76 may raise environmental and health concerns, particularly regarding its potential to release aromatic amines upon degradation. Therefore, its use is subject to regulatory scrutiny in many regions. Proper handling and disposal practices are essential to mitigate any associated risks.

Formula: C₃₂H₁₆Cu₂N₆O₁₆S₄·4Na

InChI: InChI=1S/C32H24N6O16S4.2Cu.4Na/c33-29-25(57(49,50)51)11-23(55(43,44)45)15-3-7-19(31(41)27(15)29)37-35-17-5-1-13(9-21(17)39)14-2-6-18(22(40)10-14)36-38-20-8-4-16-24(56(46,47)48)12-26(58(52,53)54)30(34)28(16)32(20)42;;;;;;/h1-12,39-42H,33-34H2,(H,43,44,45)(H,46,47,48)(H,49,50,51)(H,52,53,54);;;;;;/q;2*+2;4*+1/p-8

InChI key: InChIKey=RTXWGCFBOYSLIQ-UHFFFAOYSA-F

SMILES: [Na+].O=S(=O)([O-])C=1C=C(C=2C=CC3=C([O-][Cu+2]4[O-]C=5C=C(C=CC5N=[N]34)C6=CC=C7N=[N]8C=9C=CC%10=C(C9[O-][Cu+2]8[O-]C7=C6)C(N)=C(C=C%10S(=O)(=O)[O-])S(=O)(=O)[O-])C2C1N)S(=O)(=O)[O-]

Synonyms:

• 1,3-Naphthalenedisulfonic acid, 6,6′-[(3,3′-dihydroxy[1,1′-biphenyl]-4,4′-diyl)bis(azo)]bis[4-amino-5-hydroxy-, copper complex
• 1-Naphthol-5,7-disulfonic acid, 2,2′-(3,3′-dihydroxy-4,4′-biphenylylenebisazo)bis[8-amino-, dicopper deriv., tetrasodium salt
• Benzanil Supra Blue 2GN
• Chlorantine Fast Blue 7GL
• Chlorantine Fast Blue 7GLL
• Copper, [tetrahydrogen 6,6′-[(3,3′-dihydroxy-4,4′-biphenylylene)bis(azo)]bis[4-amino-5-hydroxy-1,3-naphthalenedisulfonato(4-)]]di-, tetrasodium salt
• Cuprate(4-), [μ-[[6,6′-[(3,3′-dihydroxy[1,1′-biphenyl]-4,4′-diyl)bis(azo)]bis[4-amino-5-hydroxy-1,3-naphthalenedisulfonato]](8-)]]di-, tetrasodium
• Cuprate(4-), [μ-[[6,6′-[[3,3′-di(hydroxy-κO)[1,1′-biphenyl]-4,4′-diyl]bis(2,1-diazenediyl-κN¹)]bis[4-amino-5-(hydroxy-κO)-1,3-naphthalenedisulfonato]](8-)]]di-, sodium (1:4)
• Cuprate(4-), [μ-[[6,6′-[[3,3′-di(hydroxy-κO)[1,1′-biphenyl]-4,4′-diyl]bis(azo-κN¹)]bis[4-amino-5-(hydroxy-κO)-1,3-naphthalenedisulfonato]](8-)]]di-, tetrasodium
• Direct Blue 76
• Durazol Blue 2GN
• Durazol Blue 2GNP
• Einecs 240-298-1
• Lumicrease Blue 4GL
• Lumicrease Sky Blue 4GL
• Lumicrease Sky Blue 6GUL
• Pontamine Fast Blue 6GL
• Pyrazol Fast Blue 4GUL
• Sirius Blue F4GA
• Solantine Blue 6GKS
• Solophenyl Blue 6GL
• copper(2+) sodium 6,6'-[(3,3'-dioxidobiphenyl-4,4'-diyl)di(E)diazene-2,1-diyl]bis(4-amino-5-oxidonaphthalene-1,3-disulfonate) (2:4:1)
• Cuprate(4-), [μ-[[6,6′-[[3,3′-di(hydroxy-κO)[1,1′-biphenyl]-4,4′-diyl]bis(2,1-diazenediyl-κN1)]bis[4-amino-5-(hydroxy-κO)-1,3-naphthalenedisulfonato]](8-)]]di-, sodium (1:4)
• C.I. Direct Blue 76, tetrasodium salt

Direct Blue 76 (Technical Grade)

CAS: 16143-79-6

• Formula: C₃₂H₁₆Cu₂N₆O₁₆S₄·4Na
• Color and Shape: Dark Brown
• Molecular weight: 1087.81

Direct blue 76

CAS: 16143-79-6

Direct blue 76 is a dye that is used in textile printing and other applications. …

• Formula: C₃₂H₁₆Cu₂N₆Na₄O₁₆S₄
• Color and Shape: Powder
• Molecular weight: 1,087.82 g/mol