Skip to main content

Ponceau 4R

ADVERTISEMENT
Identification
Molecular formula
C20H11Na3N2O10S3
CAS number
2611-82-7
IUPAC name
trisodium;4-hydroxy-7-[[5-hydroxy-6-(2-methoxyphenyl)azo-7-sulfonato-2-naphthyl]carbamoylamino]-3-(2-methyl-4-sulfonato-phenyl)azo-naphthalene-2-sulfonate
State
State
Ponceau 4R is typically a solid at room temperature, appearing as a red powder. It is stable under normal conditions and widely used as a coloring agent in various industries.
Melting point (Celsius)
300.00
Melting point (Kelvin)
573.00
Boiling point (Celsius)
0.00
Boiling point (Kelvin)
0.00
General information
Molecular weight
760.58g/mol
Molar mass
760.5800g/mol
Density
1.7200g/cm3
Appearence

Ponceau 4R is a red synthetic azo dye. It appears as a red powder which is used extensively in food and cosmetics. It provides a vibrant red hue when dissolved in water or solvents.

Comment on solubility

Solubility of Trisodium 4-Hydroxy-7-[[5-Hydroxy-6-(2-Methoxyphenyl)Azo-7-Sulfonato-2-Naphthyl]Carbamoylamino]-3-(2-Methyl-4-Sulfonato-Phenyl)Azo-Naphthalene-2-Sulfonate

The solubility of a compound is a crucial characteristic that determines its applications in various fields, including pharmaceuticals and dye chemistry. In the case of trisodium 4-hydroxy-7-[[5-hydroxy-6-(2-methoxyphenyl)azo-7-sulfonato-2-naphthyl]carbamoylamino]-3-(2-methyl-4-sulfonato-phenyl)azo-naphthalene-2-sulfonate, also known as a complex azo dye, its solubility parameters can be fascinating:

  • Water Solubility: Due to the presence of multiple sulfonate groups (-SO₃Na), this compound exhibits high solubility in water. This property is advantageous for applications that require aqueous solutions.
  • Influence of pH: The solubility can vary significantly with changes in pH. In more alkaline conditions, the increased ionization of functional groups can enhance solubility.
  • Solvent Dependence: While it shows excellent solubility in polar solvents like water, it may have limited solubility in non-polar solvents due to its ionic character.

In summary, the complex structure of this azo dye enriched with sulfonate groups contributes to its notable solubility profile. As such, it is imperative to consider environmental factors such as solvent properties and pH when studying this compound's solubility for practical applications. Remember, the solubility behavior of azo dyes is not just a matter of chemical composition but also of the interaction with the surrounding medium.

Interesting facts

Interesting Facts about Trisodium 4-Hydroxy-7-[[5-Hydroxy-6-(2-Methoxyphenyl)Azo-7-Sulfonato-2-Naphthyl]Carbamoylamino]-3-(2-Methyl-4-Sulfonato-Phenyl)Azo-Naphthalene-2-Sulfonate

This compound, often referred to in the context of azo dyes, is notable for its vibrant color and diverse applications. Here are some interesting aspects to consider:

  • Azo Dye Characteristics: As an azo compound, it features the distinctive -N=N- (azo) functional group, which is key to its color properties. Azo dyes are known for their bright, vivid hues, making them popular in various industries.
  • Applications: This compound is primarily utilized in the textile industry for dyeing fabrics. It provides excellent color fastness and can be used on different materials such as cotton and polyester.
  • Biocompatibility: With its sulfonate groups, this compound often demonstrates enhanced solubility in water, making it more environmentally friendly compared to other less soluble dyes. This characteristic improves its usability in various aqueous processes.
  • Analytical Uses: Beyond its applications in textiles, azo dyes like this one are often used in analytical chemistry as colorimetric indicators, allowing for the detection and quantification of substances in solution.
  • Regulatory Considerations: Due to concerns regarding the safety of azo dyes, many countries have established regulations on their use. Understanding these regulations is crucial for industries utilizing this compound.

In summary, trisodium 4-hydroxy-7-[[5-hydroxy-6-(2-methoxyphenyl)azo-7-sulfonato-2-naphthyl]carbamoylamino]-3-(2-methyl-4-sulfonato-phenyl)azo-naphthalene-2-sulfonate represents an intriguing intersection of chemistry and industry, offering insights into both molecular design and practical application.

Synonyms
2-Naphthalenesulfonic acid, 4-hydroxy-7-((((5-hydroxy-6-(2-(2-methoxyphenyl)diazenyl)-7-sulfo-2-naphthalenyl)amino)carbonyl)amino)-3-(2-(2-methyl-4-sulfophenyl)diazenyl)-, sodium salt (1:3)
2-Naphthalenesulfonic acid, 4-hydroxy-7-((((5-hydroxy-6-((2-methoxyphenyl)azo)-7-sulfo-2-naphthalenyl)amino)carbonyl)amino)-3-((2-methyl-4-sulfophenyl)azo)-, trisodium salt
2-Naphthalenesulfonic acid, 4-hydroxy-7-[[[[5-hydroxy-6-[(2-methoxyphenyl)azo]-7-sulfo-2-naphthalenyl]amino]carbonyl]amino]-3-[(2-methyl-4-sulfophenyl)azo]-, trisodium salt
2-Naphthalenesulfonic acid, 4-hydroxy-7-[[[[5-hydroxy-6-[2-(2-methoxyphenyl)diazenyl]-7-sulfo-2-naphthalenyl]amino]carbonyl]amino]-3-[2-(2-methyl-4-sulfophenyl)diazenyl]-, sodium salt (1:3)
direct red 24
6420-44-6
Vegentine Scarlet 4B
Mitsui Direct Fast Scarlet 4BSL
Calcomine Scarlet 4BNC
Erie Fast Scarlet 4BA
Benzo Fast Scarlet 4BA
Diazol Fast Scarlet 4BA
Direct Fast Scarlet 4BA
Atlantic Fast Scarlet 4BA
Belamine Fast Scarlet 4BA
Benzo Scarlet 4BAS
Diazamine Fast Scarlet 4BA
Diphenyl Fast Scarlet 4BSW
Hispamin Fast Scarlet 4BAS
Paramine Fast Scarlet 4BAS
Chloramine Fast Scarlet 2BSW
DC7CBG2708
Amanil Fast Scarlet 4BA
Vegentine Red CSW
Direct Scarlet 4BA
C.I. Direct Red 24, trisodium salt
trisodium;4-hydroxy-7-[[5-hydroxy-6-[(2-methoxyphenyl)diazenyl]-7-sulfonatonaphthalen-2-yl]carbamoylamino]-3-[(2-methyl-4-sulfonatophenyl)diazenyl]naphthalene-2-sulfonate
Erie Fast Scarlet 4BSH
Tertrodirect Scarlet 4BA
Direct Fast Scarlet 4SW
C.I. 29185
C.I. Direct Red 24
Pheno Fast Scarlet 4BNC
Direct Fast Scarlet 4BSW
Atlantic Fast Scarlet 4GS
Chlorazol Fast Scarlet 4BA
Belamine Fast Scarlet 4BSW
Chlorazol Fast Scarlet 4BAP
Chloramine Fast Scarlet 4BSL
Chloramine Fast Scarlet 4BSW
UNII-DC7CBG2708
C.I. Direct Red 24 (VAN)
Direct Fast Scarlet 5BS (VAN)
EINECS 229-164-3
NSC 47764
AKOS024429602
NS00045849
Q27276318
Trisodium 4-hydroxy-7-((((5-hydroxy-6-((2-methoxyphenyl)azo)-7-sulphonato-2-naphthyl)amino)carbonyl)amino)-3-((2-methyl-4-sulphonatophenyl)azo)naphthalene-2-sulphonate