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Acid Yellow 9

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Identification
Molecular formula
C12H11N2O6S2
CAS number
587-98-4
IUPAC name
5-amino-2-(4-amino-2-sulfo-phenyl)benzenesulfonic acid
State
State

At room temperature, Acid Yellow 9 is a solid. It is typically found as a powder due to its crystalline nature.

Melting point (Celsius)
300.00
Melting point (Kelvin)
573.15
Boiling point (Celsius)
600.00
Boiling point (Kelvin)
873.15
General information
Molecular weight
351.34g/mol
Molar mass
351.3370g/mol
Density
1.6200g/cm3
Appearence

Acid Yellow 9 typically appears as a yellow crystalline powder. Its vibrant color is characteristic, making it commonly used as a dye in various applications.

Comment on solubility

Solubility of 5-amino-2-(4-amino-2-sulfo-phenyl)benzenesulfonic acid

5-amino-2-(4-amino-2-sulfo-phenyl)benzenesulfonic acid, a sulfonated amine compound, exhibits notable solubility characteristics that are particularly interesting in aqueous environments. This compound is typically highly soluble in water, which can be attributed to its multiple functional groups that interact favorably with water molecules.

Key Factors Influencing Solubility:

  • Hydrophilicity: The presence of sulfonic acid groups (-SO3H) enhances the compound's ability to interact with water, providing strong hydrogen bonding.
  • Ionization: In aqueous solutions, the sulfonic and amino groups can ionize, contributing to higher solubility due to the charged nature of the compound.
  • Temperature and pH: Solubility can vary significantly with changes in temperature and pH, as these factors can either stabilize or destabilize the ionic forms of the compound.

The effective solubility of this compound makes it particularly useful in various applications, especially in biochemical contexts where aqueous solutions are prevalent. As a general observation, *the more polar a compound is, the more soluble it tends to be in water*. Thus, 5-amino-2-(4-amino-2-sulfo-phenyl)benzenesulfonic acid showcases how molecular structure intricately relates to solubility behavior.

Interesting facts

Interesting Facts About 5-Amino-2-(4-amino-2-sulfo-phenyl)benzenesulfonic Acid

5-Amino-2-(4-amino-2-sulfo-phenyl)benzenesulfonic acid is a fascinating compound with a variety of applications in both the chemical and biological sciences. Here are some intriguing aspects:

  • Structural Complexity: This compound features multiple functional groups, including amino and sulfonic acid groups. This complexity allows it to engage in various chemical reactions, making it versatile for synthesis and modification.
  • Analytical Uses: Due to its fluorescent properties, the compound is often utilized in biological assays and analytical techniques, such as fluorescence microscopy. Its structure enables researchers to tag biomolecules for better visualization.
  • Dye Industry: Amino-substituted benzenesulfonic acids are commonly used as dyes. This particular compound can be used to create vivid colorations in textiles and papers, thanks to the presence of the sulfonic acid group, which enhances its solubility in water.
  • Research Collaborator: Scientists studying sulfonamides and other related compounds often find that 5-amino-2-(4-amino-2-sulfo-phenyl)benzenesulfonic acid serves as a crucial reference point for understanding structure-activity relationships in drug design.
  • Biological Significance: Compounds of similar structure have been studied for their potential role in treating various diseases, particularly due to their ability to interact with biological targets like enzymes and receptors.

In conclusion, 5-amino-2-(4-amino-2-sulfo-phenyl)benzenesulfonic acid is more than just a chemical entity; it opens doors to innovations across various fields. As researchers continue to explore its properties, the possible implications for biotechnology and materials science remain vast and promising.

Synonyms
117-61-3
Benzidine-2,2'-disulfonic acid
2,2'-Benzidinedisulfonic acid
2,2'-Disulfobenzidine
6,6'-Bimetanilic acid
Benzidine-2,2'-disulphonic acid
4,4'-Diaminobiphenyl-2,2'-disulfonic acid
[1,1'-Biphenyl]-2,2'-disulfonic acid, 4,4'-diamino-
4,4'-Diamino-[1,1'-biphenyl]-2,2'-disulfonic acid
4,4'-Diamino-[1,1'-biphenyl]-2,2'-disulfonic acid(contains 30% Water at maximum)
5-amino-2-(4-amino-2-sulfophenyl)benzenesulfonic acid
Benzidine, 2,2'-disulfo-
4,4'-Diamino-2,2'-biphenyldisulfonic acid
Kyselina benzidin-2,2'-disulfonova
NSC 3763
4,4'-Diaminodiphenyl-2,2'-disulfonic acid
EINECS 204-200-0
ALF643N2EQ
BRN 2675524
AI3-22051
4,4'-Diamino-(1,1'-biphenyl)-2,2'-disulfonic acid
Kyselina benzidin-2,2'-disulfonova [Czech]
(1,1'-Biphenyl)-2,2'-disulfonic acid, 4,4'-diamino-
NSC-3763
4,4'-Biphenyldisulfonic acid, 2,2'-diamino-
4,4'-Diaminobiphenyl-2,2'-disulfonic acid hydrate
2,2'-BIPHENYLDISULFONIC ACID, 4,4'-DIAMINO-
2,2/'-Benzidinedisulfonic acid
DTXSID3024572
EC 204-200-0
2,2&#39-Benzidinedisulfonic acid
2,2'-Benzidinedisulfonic Acid (contains 30% Water at maximum)
MFCD00041885
UNII-ALF643N2EQ
Benzidine, 2,2'-disulfonic acid
2,2'-Disulfo-4,4'-diaminobiphenyl
Benzidine,2'-disulfo-
4, 2,2'-diamino-
2.2'-Benzidindisulfosaure
4,2'-biphenyldisulfonic acid
SCHEMBL229927
WLN: WSQR CZ F- 2
4,4'-diamino[1,1'-biphenyl]-2,2'-disulfonic acid
DTXCID304572
NSC3763
BBL034700
STL356370
AKOS001605525
[1,2'-disulfonic acid, 4,4'-diamino-
VS-12641
2,2'-Diamino-4,4'-biphenyldisulfonic acid
B0395
CS-0157051
NS00002417
D70498
Q27273988
5-amino-2-(4-amino-2-sulfophenyl)benzenesulfonic acid, tech grade
4,4'-Diamino-[1,1'-biphenyl]-2,2'-disulfonic acid (contains 30% Water at maximum)
4,4'-Diamino-[1,1'-biphenyl]-2,2'-disulfonic acid (contains 30% water max.)
4,4'-Diamino-[1,1'-biphenyl]-2,2'-disulfonicacid(contains30%Wateratmaximum)