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Ponceau SX

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Identification
Molecular formula
C32H22N4Na2O11S3
CAS number
6226-79-5
IUPAC name
disodium;7-hydroxy-8-[4-[4-[4-(p-tolylsulfonyloxy)phenyl]azophenyl]phenyl]azo-naphthalene-1,3-disulfonate
State
State

At room temperature, Ponceau SX is typically in a solid state, appearing as a crystalline powder that is used as a dye.

Melting point (Celsius)
260.00
Melting point (Kelvin)
533.15
Boiling point (Celsius)
310.00
Boiling point (Kelvin)
583.15
General information
Molecular weight
760.77g/mol
Molar mass
760.7700g/mol
Density
1.5431g/cm3
Appearence

Ponceau SX appears as a red powder. It is used as a synthetic dye and has a vibrant red color which can be used in various applications such as in food coloring and textile dyeing.

Comment on solubility

Solubility of Disodium 7-Hydroxy-8-[4-[4-[4-(p-Tolylsulfonyloxy)phenyl]azophenyl]phenyl]azo-naphthalene-1,3-disulfonate

The solubility of Disodium 7-Hydroxy-8-[4-[4-[4-(p-tolylsulfonyloxy)phenyl]azophenyl]phenyl]azo-naphthalene-1,3-disulfonate is influenced by various factors, primarily its molecular structure and ionic nature. As a disodium salt, it tends to be highly soluble in water due to the following reasons:

  • Ionic Structure: The presence of two sodium ions contributes to its stability in aqueous solutions, facilitating interaction with water molecules.
  • Polar Functional Groups: The sulfonate groups (-SO3-) enhance its hydrophilicity, allowing the molecule to interact favorably with water.
  • Complex Formation: This compound may engage in complexation with water or other solvating molecules, improving its solubility.

It is noteworthy that the solubility can vary based on factors such as:

  • Temperature: Generally, increasing temperature can lead to increased solubility for many compounds.
  • pH of the Solution: Alterations in pH can impact the ionization state of the compound, thus affecting solubility.
  • Presence of Other Ions: Other ions in the solution might lead to competition or interactions that could alter solubility.

In practical applications, the high solubility of this compound in aqueous environments makes it suitable for use in various chemical and biological systems. As noted, "the more ionic and polar characteristics a compound has, the better its solubility in polar solvents will be." Thus, understanding the solubility characteristics of this compound is crucial for its effective application in diverse fields.

Interesting facts

Interesting Facts about Disodium 7-Hydroxy-8-[4-[4-[4-(p-Tolylsulfonyloxy)phenyl]azophenyl]phenyl]azo-naphthalene-1,3-disulfonate

Disodium 7-hydroxy-8-[4-[4-[4-(p-tolylsulfonyloxy)phenyl]azophenyl]phenyl]azo-naphthalene-1,3-disulfonate, commonly recognized as a vibrant azo dye compound, is notable for several reasons:

  • Color Usage: Azo dyes are renowned for their rich colors and are widely used in the textile industry, plastics, and cosmetics. This compound’s azo group plays a crucial role in producing intense dye colors.
  • Stability: The stability of azo dyes under various conditions makes them suitable for multiple applications, although their stability can vary based on the substituent groups.
  • Biological Activity: Some azo compounds have been investigated for their potential mutagenic and carcinogenic effects. Understanding these aspects is important for safety evaluations in various industries.
  • Synthetic Application: The chemical structure allows for complex synthesis and modification, which supports the development of new derivatives with potentially altered properties.
  • Environmental Concerns: The biodegradability of azo dyes is a significant concern. Research continues to address the environmental impact of such compounds, particularly in wastewater.

As a compound that intricately combines organic synthesis with practical applications, disodium 7-hydroxy-8-[4-[4-[4-(p-tolylsulfonyloxy)phenyl]azophenyl]phenyl]azo-naphthalene-1,3-disulfonate stands as a remarkable example of how chemistry intersects with both art in coloration and critical environmental considerations.

Synonyms
1,3-Naphthalenedisulfonic acid, 7-hydroxy-8-((4'-((4-(((4-methylphenyl)sulfonyl)oxy)phenyl)azo)(1,1'-biphenyl)-4-yl)azo)-, disodium salt
1,3-Naphthalenedisulfonic acid, 7-hydroxy-8-(2-(4'-(2-(4-(((4-methylphenyl)sulfonyl)oxy)phenyl)diazenyl)(1,1'-biphenyl)-4-yl)diazenyl)-, sodium salt (1:2)
1,3-Naphthalenedisulfonic acid, 7-hydroxy-8-[[4'-[[4-[[(4-methylphenyl)sulfonyl]oxy]phenyl]azo][1,1'-biphenyl]-4-yl]azo]-, disodium salt
1,3-Naphthalenedisulfonic acid, 7-hydroxy-8-[2-[4'-[2-[4-[[(4-methylphenyl)sulfonyl]oxy]phenyl]diazenyl][1,1'-biphenyl]-4-yl]diazenyl]-, sodium salt (1:2)
Acid Red 85
C.I. Acid Red 88, disodium salt
3567-65-5
C.I. Acid Red 85
C.I. Acid Red 85, disodium salt
C.I. 22245
37R1R4C74K
Sulfonine Red G
Lanaperl Red G
Fast Scarlet S
Folan Yellow G
Erionyl Red G
Milling Red J
Neonyl Scarlet R
Fenafor Red PG
Kayanol Red PG
Milling Red SWG
Neutral Red PG
Suminol Red PG
Benzyl Red GR
Coomassie Red PG
Midlon Red PG
Sulfonine Red GN
Sulfonine Red GS
Sulfonine Red SG
Sulphonol Red PG
Milling Scarlet G
Polar Red G
Airedale Red PGM
Acid Red PG
Coomassie Red PGP
Elite Fast Red G
Kca Silk Red G
Acidine Scarlet GD
Pharmanil Scarlet Y
Polar Red G Supra
Nitto Acid Red PG
Supranol Scarlet BN
Milling Fast Red G
Vondamol Fast Red G
Elite Fast Red GRS
Supranol Red PG-CF
Acid Leather Red GR
Milling Fast Red GL
Milling Fast Red PG
Shikiso Acid Red PG
Symulon Acid Red PG
Apocid Milling Red G
Benzyl Fast Red GRG
Telon Fast Scarlet N
Lanaperl Fast Red 3G
Acid Leather Scarlet G
Kayanol Milling Red PG
Amacid Milling Red PGS
Tertracid Milling Red G
Optanol Fast Scarlet GN
Mitsui Milling Scarlet G
Cutamin Brilliant Red CG
Supranol Fast Scarlet GN
Nylomine Acid Scarlet C-R
Nylomine Acid Scarlet P-R
Altochrome Milling Scarlet G
Milling Brilliant Scarlet GN
disodium;7-hydroxy-8-[[4-[4-[[4-(4-methylphenyl)sulfonyloxyphenyl]diazenyl]phenyl]phenyl]diazenyl]naphthalene-1,3-disulfonate
EINECS 222-655-3
UNII-37R1R4C74K
CI ACID RED 85
DTXSID4036801
XSIMZBFGPLCMII-INRBVDRASA-L
CI ACID RED 85, DISODIUM SALT
CI 22245
Disodium 7-hydroxy-8-((4'-((4-(((p-tolyl)sulphonyl)oxy)phenyl)azo)(1,1'-biphenyl)-4-yl)azo)naphthalene-1,3-disulphonate
NS00048516
Q27256694