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Reactive Black 5

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Identification
Molecular formula
C26H21N5Na2O19S6
CAS number
17095-24-8
IUPAC name
disodium;7-amino-4-hydroxy-3-[4-[4-[(1-hydroxy-4-sulfonato-2-naphthyl)azo]-3-methoxy-phenyl]-2-methoxy-phenyl]azo-naphthalene-2-sulfonate
State
State

Reactive Black 5 is generally found as a solid at room temperature, most commonly in powdered form, given its application as an industrial dye.

Melting point (Celsius)
0.00
Melting point (Kelvin)
0.00
Boiling point (Celsius)
0.00
Boiling point (Kelvin)
0.00
General information
Molecular weight
991.82g/mol
Molar mass
991.8150g/mol
Density
0.0000g/cm3
Appearence

The compound is typically a black solid in its pure form and is often used as a dye. It may appear as a powdered solid or as granular solid due to its usage in industrial dye applications.

Comment on solubility

Solubility of Disodium; 7-amino-4-hydroxy-3-[4-[4-[(1-hydroxy-4-sulfonato-2-naphthyl)azo]-3-methoxy-phenyl]-2-methoxy-phenyl]azo-naphthalene-2-sulfonate

The solubility of the compound disodium; 7-amino-4-hydroxy-3-[4-[4-[(1-hydroxy-4-sulfonato-2-naphthyl)azo]-3-methoxy-phenyl]-2-methoxy-phenyl]azo-naphthalene-2-sulfonate can be influenced by various factors. Here are some key points to consider:

  • Ionic nature: As a disodium salt, this compound is likely to be highly soluble in water due to the presence of sodium ions, which facilitate dissociation.
  • Functional groups: The presence of sulfonate groups contributes to the compound's hydrophilicity, enhancing solubility in polar solvents.
  • Temperature effects: Like many chemical compounds, its solubility may increase with temperature, prompting a more efficient dissolution in aqueous environments.
  • pH sensitivity: The ionic and charged nature of this compound suggests it may show variable solubility depending on the pH of the solution, particularly in acidic or basic conditions.

In summary, the solubility of this compound can be described as highly soluble in water, making it a useful candidate in various applications where aqueous solutions are necessary. However, precise solubility metrics would require experimental validation under specific conditions to fully understand its behavior in different environments.

Interesting facts

Interesting Facts about Disodium 7-Amino-4-hydroxy-3-[4-[4-[(1-hydroxy-4-sulfonato-2-naphthyl)azo]-3-methoxy-phenyl]-2-methoxy-phenyl]azo-naphthalene-2-sulfonate

Disodium 7-amino-4-hydroxy-3-[4-[4-[(1-hydroxy-4-sulfonato-2-naphthyl)azo]-3-methoxy-phenyl]-2-methoxy-phenyl]azo-naphthalene-2-sulfonate is a complex azo dye extensively used in various industrial applications. Here are some fascinating aspects of this compound:

  • Dye Applications: This compound belongs to the family of azo dyes, which are known for their vibrant colors. They are commonly used in textiles, food processing, and cosmetics.
  • Color Characteristics: Azo compounds are prized for their ability to produce a range of colors, contributing to their popularity in dye manufacturing. Disodium variants enhance their solubility in water, making them easier to use in various applications.
  • Environmental Impact: The synthesis and disposal of azo dyes have raised environmental concerns. Some azo dyes can degrade into potentially harmful substances; thus, advancements in synthesis aim to develop safer and more environmentally friendly alternatives.
  • Analytical Chemistry: In pharmaceutical and biochemical research, this compound may be used as a marker or tracer due to its distinctive color properties, aiding in the visualization of various processes in analytical studies.
  • Innovative Uses: Researchers are studying azo dyes for potential uses in solar energy applications, such as dye-sensitized solar cells, due to their light-absorbing properties.

As expressed by renowned chemist Marie Curie, "One never notices what has been done; one can only see what remains to be done." This resonates particularly with the ongoing research and development efforts in the field of azo dyes, where scientists continue to explore their potential.

In summary, disodium 7-amino-4-hydroxy-3-[4-[4-[(1-hydroxy-4-sulfonato-2-naphthyl)azo]-3-methoxy-phenyl]-2-methoxy-phenyl]azo-naphthalene-2-sulfonate holds vast potential in science, textiles, and innovative applications, making it an exciting topic of study within the field of chemistry.

Synonyms
1-Naphthalenesulfonic acid, 3-((4'-((6-amino-1-hydroxy-3-sulfo-2-naphthalenyl)azo)-3,3'-dimethoxy(1,1'-biphenyl)-4-yl)azo)-4-hydroxy-, disodium salt
1-Naphthalenesulfonic acid, 3-(2-(4'-(2-(6-amino-1-hydroxy-3-sulfo-2-naphthalenyl)diazenyl)-3,3'-dimethoxy(1,1'-biphenyl)-4-yl)diazenyl)-4-hydroxy-, sodium salt (1:2)
1-Naphthalenesulfonic acid, 3-[[4'-[(6-amino-1-hydroxy-3-sulfo-2-naphthalenyl)azo]-3,3'-dimethoxy[1,1'-biphenyl]-4-yl]azo]-4-hydroxy-, disodium salt
1-Naphthalenesulfonic acid, 3-[2-[4'-[2-(6-amino-1-hydroxy-3-sulfo-2-naphthalenyl)diazenyl]-3,3'-dimethoxy[1,1'-biphenyl]-4-yl]diazenyl]-4-hydroxy-, sodium salt (1:2)
Direct Blue 151
C.I. DIRECT BLUE 151, DISODIUM SALT
Direct Lightfast Blue KU
Indoxine DRB
Azoform Blue FO
Niagara Blue R
Diazamine Blue B
Direct Blue CV
C.I. Direct Blue 151
Cotton Blue CVB
Enianil Blue CVB
Trisulfon Blue FO
Diazophenyl Blue B
Trimal Blue CVBN
Enianil Blue CVBO
Metadiazol Blue CV
Trimaal Blue CVBN
Diamineral Blue CVB
Diazo Fast Blue MP
Cuprodirect Blue CVS
Direct Copper Blue A
Direct Copper Blue B
Tertrodirect Blue CVB
Azine Copper Blue 2B
Vondacel Dark Blue CVB
Benzo Copper Blue CVBS
Chlorazol Copper Blue B
6449-35-0
Diacotton Copper Blue BB
Brasilamina Copper Blue R
Pontamine Copper Blue RRX
Diaphtamine Copper Blue FO
C.I. 24175
CCRIS 2421
C.I. Direct Blue 151 (VAN)
EINECS 229-250-0
Direct Blue 168
NSC 47754
DTXSID2064367
C.I. Direct Blue 151,disodium salt
Disodium 3-((4'-((6-amino-1-hydroxy-3-sulpho-2-naphthyl)azo)-3,3'-dimethoxy(1,1'-biphenyl)-4-yl)azo)-4-hydroxynaphthalene-1-sulphonate
NS00045996