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Carmoisine

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Identification
Molecular formula
C20H12N2Na4O14S4
CAS number
3567-69-9
IUPAC name
tetrasodium;4-acetamido-5-hydroxy-6-[[7-sulfonato-4-(4-sulfonatophenyl)azo-1-naphthyl]azo]naphthalene-1,7-disulfonate
State
State
Carmoisine is typically found in a solid powder form under standard conditions. This powder is used for coloring purposes in various industries including food, cosmetics, and textiles.
Melting point (Celsius)
0.00
Melting point (Kelvin)
0.00
Boiling point (Celsius)
0.00
Boiling point (Kelvin)
0.00
General information
Molecular weight
534.36g/mol
Molar mass
534.3600g/mol
Density
1.9000g/cm3
Appearence

Carmoisine appears as a red to maroon powder that is commonly used as a synthetic Azo dye. It is water-soluble and provides a bright, consistent red color in various applications.

Comment on solubility

Solubility of Tetrasodium 4-Acetamido-5-Hydroxy-6-[[7-Sulfonato-4-(4-Sulfonatophenyl)Azo-1-Naphthyl]Azo]Naphthalene-1,7-Disulfonate

The compound tetrasodium 4-acetamido-5-hydroxy-6-[[7-sulfonato-4-(4-sulfonatophenyl)azo-1-naphthyl]azo]naphthalene-1,7-disulfonate exhibits notable solubility characteristics due to its ionic nature and multiple sulfonate groups. Here are some key points regarding its solubility:

  • Highly Soluble in Water: This compound is known for its high solubility in polar solvents, particularly in water, because ionic compounds tend to dissociate in aqueous solutions.
  • Role of Sulfonate Groups: The presence of several sulfonate groups (-SO3-) contributes significantly to its solubility by facilitating ion-dipole interactions.
  • Effect of Temperature: Like many ionic compounds, the solubility may increase with temperature, making it more favorable in warmer conditions.
  • pH Sensitivity: The solubility can also be influenced by the pH of the solution; modifications in pH could affect the ionization of the functional groups, altering solubility profiles.

Overall, the combination of multiple sulfonate functional groups and its ionic structure makes tetrasodium 4-acetamido-5-hydroxy-6-[[7-sulfonato-4-(4-sulfonatophenyl)azo-1-naphthyl]azo]naphthalene-1,7-disulfonate exceptionally soluble in water, which is beneficial for its applications in various chemical and biological processes.

Interesting facts

Interesting Facts about Tetrasodium 4-Acetamido-5-Hydroxy-6-[[7-Sulfonato-4-(4-Sulfonatophenyl)Azo-1-Naphthyl]Azo]Naphthalene-1,7-Disulfonate

This intriguing compound, commonly recognized for its role as a dye and coloring agent, is particularly significant in the field of analytical chemistry and materials science. Here are some fascinating insights into this compound:

  • Dyes and Textiles: The compound is primarily used as a colorant in textiles and paper, providing an array of vibrant colors thanks to its azo group structures, which are notable for their ability to absorb visible light.
  • Applications in Biology: It has found applications beyond textiles; it is utilized in biological and biochemical applications, where it can serve as a marker in various assays and in the detection of specific proteins or cellular components.
  • Environmental Monitoring: The compound can aid in environmental studies, helping scientists to track pollutants due to its strong absorbance characteristics, which can be quantitatively analyzed using spectrophotometry.
  • Multi-Functional Nature: With its multi-sulfonate groups, this compound is highly water-soluble, making it a versatile agent for various applications across different pH ranges.

As a scientist immersed in the study of chemical compounds, it is particularly striking how complex structures like this compound can exhibit such varied functionalities. The ability to manipulate these properties allows for innovation in product development and research methodologies. Exploring compounds like this underlines the interconnectedness of chemistry with numerous fields, from textiles to environmental sciences, emphasizing the importance of chemical research in everyday life.

In the words of renowned chemist Linus Pauling: "The best way to have a good idea is to have lots of ideas." This highlights the importance of studying compounds such as this, as they contribute to a wealth of knowledge and innovative applications.

Synonyms
Black PN
Brilliant Black BN
Food black 1
Blue Black BN
Brilliant Black A
Brilliant black 1
Melan Black
C.I. FOOD BLACK 1
Cilefa Black B
Xylene Black F
Hexacol Black PN
1743 Black
Certicol Black PNW
Edicol Supra Black BN
Black BN
L-Schwarz 1
Brilliant Black NAF
Brilliant Acid Black BNA Export
CI 28440
Brilliant Black N. FQ
Noir brillant BN
Brillant Black 1
Brilliant Acid Black BN Extra Pure A
E 151
Brilliantschwarz BN
CERN brilantni PN
Noir brillant BN [French]
CERN brilantni PN [Czech]
Brilliantschwarz BN [German]
CCRIS 113
CERN potravinarska 1
C.I. 28440
CERN potravinarska 1 [Czech]
L Black 8000
EINECS 219-746-5
2WPR32U0CP
XYLENE BLACK
Tetrasodium 1-acetamido-2-hydroxy-3-(4-((4-sulphonatophenylazo)-7-sulphonato-1-naphthylazo))naphthalene-4,6-disulphonate
BLACK PN [MART.]
INS NO.151
BRILLIANT BLACK BN [MI]
INS-151
COLOUR INDEX NO. 28440
BRILLIANT BLACK PN [USP-RS]
1,7-Naphthalenedisulfonic acid, 4-(acetylamino)-5-hydroxy-6-((7-sulfo-4-((4-sulfophenyl)azo)-1-naphthalenyl)azo)-, tetrasodium salt
E-151
BLACK PN (MART.)
CI (1975) NO. 28440
1,7-Naphthalenedisulfonic acid, 4-acetamido-5-hydroxy-6-((7-sulfo-4-((p-sulfophenyl)azo)-1-naphthyl)azo)-, tetrasodium salt
2-(4-(p-Sulfophenylazo)-7-sulfo-1-naphthylazo)-8-acetamido-1-naphthol-3,5-di-sulonic acid, tetrasodium salt
BRILLIANT BLACK PN (USP-RS)
1,7-Naphthalenedisulfonic acid, 4-(acetylamino)-5-hydroxy-6-[[7-sulfo-4-[(4-sulfophenyl)azo]-1-naphthalenyl]azo]-, tetrasodium salt
BRILLIANT BLACK 1 [INCI]
CI 28440 [INCI]
C.I.(1956) No. 28440
2519-30-4
Brilliant Black PN
C.I. Food Black 1, tetrasodium salt
MFCD00078980
Black PN (~80%)
tetrasodium;4-acetamido-5-hydroxy-6-[[7-sulfonato-4-[(4-sulfonatophenyl)diazenyl]naphthalen-1-yl]diazenyl]naphthalene-1,7-disulfonate
E151; Brilliant Black BN (E151)
UNII-2WPR32U0CP
black-pn
tetrasodium 4-acetamido-5-oxo-6-(2-{7-sulfonato-4-[2-(4-sulfonatophenyl)hydrazin-1-ylidene]naphthalen-1-ylidene}hydrazin-1-ylidene)naphthalene-1,7-disulfonate
BRILLIANTBLACKBN
C.I. Food Black-1
CI FOOD BLACK 1
Black PN (~80per cent)
DTXSID2020183
AGKKBBSOKGLVTM-HZGWVLLFSA-J
AKOS024319586
AKOS025310995
Brilliant Black BN (C.I. 28440)
FF41183
tetrasodium 4-(acetylamino)-5-hydroxy-6-[(E)-{7-sulfonato-4-[(E)-(4-sulfonatophenyl)diazenyl]naphthalen-1-yl}diazenyl]naphthalene-1,7-disulfonate
DB-046643
B1561
NS00013495
D88828
Q420079
ACID BLACK 3 (NAPHTHOL BLACK C.I. 27260)
Sodium 4-acetamido-5-hydroxy-6-((7-sulfonato-4-((4-sulfonatophenyl)diazenyl)naphthalen-1-yl)diazenyl)naphthalene-1,7-disulfonate