Skip to main content

Carmoisine

ADVERTISEMENT
Identification
Molecular formula
C20H12N2Na2O7S2
CAS number
3567-69-9
IUPAC name
disodium;5-amino-4-hydroxy-3-phenylazo-naphthalene-2,7-disulfonate
State
State

At room temperature, Carmoisine is a solid. It is commonly available in a dry, powdered form which makes it suitable for adding as a colorant in various food and beverage applications. Given its stable structure, it remains in solid state under typical environmental conditions of handling and storage.

Melting point (Celsius)
300.00
Melting point (Kelvin)
573.15
Boiling point (Celsius)
458.00
Boiling point (Kelvin)
731.15
General information
Molecular weight
502.43g/mol
Molar mass
502.4250g/mol
Density
1.6000g/cm3
Appearence

Carmoisine typically appears as a reddish to maroon powder. It is often used as a food dye, and when dissolved in water, it yields a bright red solution. The exact shade can vary based on the concentration and medium of dissolution.

Comment on solubility

Solubility of Disodium 5-Amino-4-Hydroxy-3-Phenylazo-Naphthalene-2,7-Disulfonate

Disodium 5-amino-4-hydroxy-3-phenylazo-naphthalene-2,7-disulfonate is a fascinating compound when it comes to its solubility characteristics.

Key features of its solubility include:

  • Highly soluble in water: The presence of sulfonate groups makes this compound readily soluble in aqueous solutions.
  • Temperature dependency: Like many salts, solubility may vary with temperature, generally increasing with higher temperatures.
  • Effect of pH: The solubility can be influenced by the pH of the solution; in more acidic or alkaline conditions, there may be changes in solubility behavior.
  • Low solubility in organic solvents: It is considerably less soluble in organic solvents due to its ionic nature and polar functional groups.

To summarize, disodium 5-amino-4-hydroxy-3-phenylazo-naphthalene-2,7-disulfonate showcases excellent water solubility, which is a crucial aspect for its application in various chemical processes. Its solubility dynamics can be an interesting area of study, particularly in relation to its interaction with other compounds in solution.

Interesting facts

Interesting Facts about Disodium 5-Amino-4-Hydroxy-3-Phenylazo-Naphthalene-2,7-Disulfonate

Disodium 5-Amino-4-Hydroxy-3-Phenylazo-Naphthalene-2,7-Disulfonate is a fascinating compound within the world of azo dyes. Here are some key insights that highlight its unique characteristics and applications:

  • Colorful Chemistry: This compound is known for its vibrant coloration, making it a popular choice in the textile industry for dyeing fabrics. It can produce a range of hues, particularly bright and intense shades.
  • Versatile Applications: Beyond textiles, it finds use in various applications, including food coloring and cosmetics. Its stability and solubility make it suitable for different formulations.
  • Historical Significance: Azo dyes, including this compound, have a rich history, first being developed in the late 19th century. They transformed the dye industry with their ability to produce lasting and diverse colors.
  • Safety and Regulations: As with many synthetic dyes, the safety of azo dyes, including disodium 5-amino-4-hydroxy-3-phenylazo-naphthalene-2,7-disulfonate, is evaluated under regulations. Understanding potential health impacts is crucial for safe use.
  • Chemical Structure: The structure of this compound includes multiple functional groups, including amino and sulfonic acid groups, which contribute to its properties and reactivity, providing a deep insight into the chemistry of azo compounds.

In summary, disodium 5-amino-4-hydroxy-3-phenylazo-naphthalene-2,7-disulfonate is an intriguing example of how chemistry blends aesthetics with functionality. As scientists continue to explore such compounds, the understanding of their applications, effects, and potential for innovation continues to grow.

Synonyms
Acid red 33
Redusol Z
Azo magenta G
Certicol Red B
Fast acid magenta
Hexalan Red B
D.C. Red No. 33
Acetyl Red B
Naphthalene Red B
Colacid Red 2A
Hispacid Fuchsin B
Amacid fuchsine 4B
Brasilan fuchsine D
Hexacol Red 10B
Edicol Supra 10B
Eniacid fuchsine BN
Acid Red 2A
Edicol Supra 10BS
D&C Red No. 33
Fast Acid Magenta B
Acid fuchsine D
C.I. Acid Red 33, disodium salt
Edicol Supra Red 10B
Red 10B
11427 Red
Edicol Supra Red 10BS
C.I. Reducing Agent 6
Edicol Supra Red 10 BS
Acid Fuchsin Fast B
Red No. 227
D & C Red no. 33
1424 Red
C.I. Red 33, disodium salt
C.I. Food Red 12
CI 17200
9DBA0SBB0L
D and C Red No. 33
NSC 5004
EINECS 222-656-9
NSC 12190
CCRIS 8575
Disodium 2-phenylazo-3,5-naphthalenedisulfonate
FOOD RED 12
2,7-Naphthalenedisulfonic acid, 5-amino-4-hydroxy-3-(phenylazo)-, disodium salt
DC RED NO. 33
C.I. 17200
AKA227
RED 33
DTXSID1044562
Disodium 5-amino-4-hydroxy-3-(phenylazo)naphthalene-2,7-disulphonate
NSC-5004
D&C RED NO. 33 [II]
5-Amino-4-hydroxy-3-(phenylazo)-2,7-naphthalenedisulfonic acid, disodium salt
NSC-12190
FD&C RED NO. 33 (DELISTED)
FD&C RED NO. 33 (DELISTED) [II]
2,7-Naphthalenedisulfonic acid, 4-amino-5-hydroxy-6-phenylazo-, disodium salt
2,7-Naphthalenedisulfonic acid, 5-amino-4-hydroxy-3-(2-phenyldiazenyl)-, sodium salt (1:2)
D&C RED NO. 33 (II)
DISODIUM 1-HYDROXY-2-PHENYLAZO-8-AMINONAPHTHALENE-3,6-DISULFONATE
FD&C RED NO. 33 (DELISTED) (II)
azofuchsine
AKA227 [INCI]
RED 33 [INCI]
ACID RED 33 [INCI]
DTXCID9024562
CI 17200 [INCI]
C.I. Acid Red 33, disodium salt (8CI)
Azo fuchsine
3567-66-6
AZOFUCHSIN
C.I. ACID RED 33
D&C Red 33
Azo grenadine
Acid Red B
disodium;5-amino-4-hydroxy-3-phenyldiazenylnaphthalene-2,7-disulfonate
UNII-9DBA0SBB0L
SCHEMBL186094
Acid Red 33, analytical standard
D & C RED #33 [VANDF]
AKOS024429575
AKOS040768118
F D & C RED #33 [VANDF]
ACID RED 33 (C.I. 17200)
NS00019522
C20346
Q5203006
disodium;5-amino-4-hydroxy-3-[(E)-phenylazo]naphthalene-2,7-disulfonate