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Congo Red

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Identification
Molecular formula
C32H22N6Na2O6S2
CAS number
573-58-0
IUPAC name
disodium;8-anilino-5-[[4-(3-sulfonatophenyl)azo-1-naphthyl]azo]naphthalene-1-sulfonate
State
State

At room temperature, Congo Red is typically found in a solid state, specifically as a powder.

Melting point (Celsius)
360.00
Melting point (Kelvin)
633.15
Boiling point (Celsius)
0.00
Boiling point (Kelvin)
0.00
General information
Molecular weight
696.67g/mol
Molar mass
696.6650g/mol
Density
0.9006g/cm3
Appearence

Congo Red is a red powder that is soluble in water. It has a distinctive bright red appearance when dissolved, which makes it popular for use as a dye.

Comment on solubility

Solubility Characteristics of Disodium 8-anilino-5-[[4-(3-sulfonatophenyl)azo-1-naphthyl]azo]naphthalene-1-sulfonate

Disodium 8-anilino-5-[[4-(3-sulfonatophenyl)azo-1-naphthyl]azo]naphthalene-1-sulfonate, often referred to as a dye or pigment, exhibits notable solubility properties that are essential for its application in various fields.

General Solubility Behavior

This compound is highly soluble in water, a characteristic that is primarily attributed to its sulfonate groups. The presence of these polar functional groups enhances its interaction with water molecules, making it more likely to dissolve. Key points regarding its solubility include:

  • High Water Solubility: The compound readily dissolves in aqueous solutions, which is beneficial for applications in textile dyes and biological staining.
  • Low Solubility in Organic Solvents: Unlike many organic dyes, this compound shows limited solubility in common organic solvents, which can hinder its use in certain industrial applications that require non-aqueous mediums.
  • pH Dependence: The solubility may vary with changes in pH, where increasing the acidity can result in better solubility due to enhanced ionization of the sulfonate groups.

Implications of Solubility

The solubility of this compound is not only a crucial factor in its usability but also impacts its stability and effectiveness in various formulations. As noted from various studies, "highly soluble dyes are more easily incorporated into matrices, enhancing their performance."

In summary, the solubility profile of disodium 8-anilino-5-[[4-(3-sulfonatophenyl)azo-1-naphthyl]azo]naphthalene-1-sulfonate underscores its relevance in aqueous environments, making it a versatile compound in both research and industrial applications.

Interesting facts

Interesting Facts about Disodium 8-Anilino-5-[[4-(3-Sulfonatophenyl)Azo-1-Naphthyl]Azo]Naphthalene-1-Sulfonate

Disodium 8-anilino-5-[[4-(3-sulfonatophenyl)azo-1-naphthyl]azo]naphthalene-1-sulfonate, often referred to as a vital dye, plays a significant role in various fields of chemistry and biology. Here are some fascinating insights about this compound:

  • Biological Applications: This compound is widely used as a dye in biological staining. Its vibrant coloration allows scientists to visualize complex biological structures and processes, making it essential in microscopy and histology.
  • Indicator Properties: As a pH indicator, disodium 8-anilino-5-[[4-(3-sulfonatophenyl)azo-1-naphthyl]azo]naphthalene-1-sulfonate can signal changes in pH levels by shifting color, thus serving as a valuable tool in analytical chemistry.
  • Colorimetric Analysis: This compound is utilized in colorimetric assays, where its concentration can be measured based on the intensity of the color developed in response to specific chemical reactions.
  • Research in Cancer Studies: Researchers have explored its potential in cancer studies, particularly in understanding the binding of dyes to various tissue types and how this property can be manipulated for therapeutic purposes.

In conclusion, the multifunctionality of disodium 8-anilino-5-[[4-(3-sulfonatophenyl)azo-1-naphthyl]azo]naphthalene-1-sulfonate highlights the intersection of chemistry and biological sciences. Its contributions are invaluable, making it an essential compound for researchers and students alike. As noted by many scientists, "The beauty of chemical compounds lies not only in their structure but in their versatile applications across multiple disciplines."

Synonyms
ACID BLUE 113
Sulfon Blue 5R
Cirene Blue 5RA
Fenazo Blue S5R
Cloth Blue 5R
Erionyl Blue S5R
Fast Blue 5R
Sulfonine Blue 5R
Alphanol Blue 5RN
Cloth Fast Blue R
Kayanol Cyanine 5R
Sulphoncin Blue 5R
Sulphonol Navy 5RX
Cloth Fast Blue RN
Java Fast Blue 5R
Erio Fast Blue S5R
Acid Leather Blue RN
Benzyl Fast Blue 5R
Cloth Fast Blue S5R
Nylosan navy blue nrbl
Colacid Fast Blue 5R
Cyanine Navy Blue 5R
Milling Fast Blue 5R
Neutral Fast Blue 5R
Eniacid Cloth Blue 5R
Pontacyl Fast Blue 5R
Vondamol Fast Blue 5R
Acid Leather Blue 5RN
Eriosin Fast Blue S5R
Sulphoncyanine 5R Extra
Yamada Acid Cyanine 5R
Telon Fast Navy Blue R
Cyanine Navy Blue 2RNX
Sulphon Cyanine 5RA-CF
Coomassie Navy Blue 2RN
Hispacid Cloth Blue 5RF
Optanol Cyanine 5R Extra
Suminol Cyanine 5R Extra
Supranol Fast Cyanine 5R
C.I. Acid Blue 113, disodium salt
Folan Fast Navy Blue 5R
Nylomine Acid Navy C-2R
Nylomine Acid Navy P-2R
Acid Fast Blue 5R
Azo Cyanine Blue 5R Extra
Kayanol Milling Cyanine 5R
CI ACID BLUE 113
Tertracid Fast Navy Blue CR
Naphthalene Leather Navy 2RN
Acid Milling Navy Blue 2RNX
Supranol Fast Cyanine 5R Extra
C.I. 26360
Supranol Fast Cyanine 5RT Extra
Suminol Milling Cyanine 5R Extra
EINECS 222-111-5
NSC 47746
NSC-47746
CI 26360
CI ACID BLUE 113, DISODIUM SALT
EC 222-111-5
1-Naphthalenesulfonic acid, 8-(phenylamino)-5-((4-((3-sulfophenyl)azo)-1-naphthalenyl)azo)-, disodium salt
1-Naphthalenesulfonic acid, 8-(phenylamino)-5-(2-(4-(2-(3-sulfophenyl)diazenyl)-1-naphthalenyl)diazenyl)-, sodium salt (1:2)
Sodium 8-phenylamino-5-(4-(3-sulphonatophenylazo)-1-naphthylazo)naphthalenesulphonate
1-Naphthalenesulfonic acid, 8-(phenylamino)-5-[2-[4-[2-(3-sulfophenyl)diazenyl]-1-naphthalenyl]diazenyl]-, sodium salt (1:2)
1-Naphthalenesulfonic acid, 8-(phenylamino)-5-[[4-[(3-sulfophenyl)azo]-1-naphthalenyl]azo]-, disodium salt
C.I. Acid Blue 113, disodium salt (8CI)
1-Naphthalenesulfonic acid, 8-(phenylamino)-5-4-(3-sulfophenyl)azo-1-naphthalenylazo-, disodium salt
3351-05-1
C.I. Acid Blue 113
ACIDBLUE113
Neutral Blue 5R
6BJW83X6LV
MFCD00003900
disodium;8-anilino-5-[[4-[(3-sulfonatophenyl)diazenyl]naphthalen-1-yl]diazenyl]naphthalene-1-sulfonate
UNII-6BJW83X6LV
SCHEMBL2858719
DTXSID7044920
XPRMZBUQQMPKCR-UHFFFAOYSA-L
Acid Blue 113, Dye content 50 %
AKOS000282533
NS00077190
Q27264448
DISODIUM 8-(PHENYLAMINO)-5-(2-{4-[2-(3-SULFONATOPHENYL)DIAZEN-1-YL]NAPHTHALEN-1-YL}DIAZEN-1-YL)NAPHTHALENE-1-SULFONATE