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Orange G

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Identification
Molecular formula
C16H10N2Na2O7S2
CAS number
1936-15-8
IUPAC name
disodium;3-hydroxy-4-(2,4,5-trimethylphenyl)azo-naphthalene-2,7-disulfonate
State
State

At room temperature, Orange G is in a solid state, appearing as a crystalline powder. It is stable under normal conditions and does not readily evaporate or change to a liquid or gas form.

Melting point (Celsius)
300.00
Melting point (Kelvin)
573.15
Boiling point (Celsius)
584.90
Boiling point (Kelvin)
858.05
General information
Molecular weight
452.38g/mol
Molar mass
452.3830g/mol
Density
1.6000g/cm3
Appearence

Orange G is a bright orange powder. It is commonly used as a dye and has a striking orange hue. The appearance is typically fine and homogeneous, with the vibrant color being a distinctive characteristic.

Comment on solubility

Solubility of Disodium 3-Hydroxy-4-(2,4,5-trimethylphenyl)azo-naphthalene-2,7-disulfonate

Disodium 3-hydroxy-4-(2,4,5-trimethylphenyl)azo-naphthalene-2,7-disulfonate, commonly referred to as a dye compound, exhibits unique solubility characteristics that are essential for its applications in various fields.

In terms of solubility, this compound is known to be:

  • Highly soluble in water: The presence of multiple sulfonate groups enhances its ability to dissolve in aqueous solutions. This property is crucial for its functionality in various dyeing processes.
  • Moderately soluble in organic solvents: Although primarily water-soluble, it can still dissolve in certain polar organic solvents, which might depend on the solvent's polarity and temperature.
  • Insoluble in nonpolar solvents: Due to its large, polar hydrophilic components, it does not readily dissolve in nonpolar solvents such as hexane or other aliphatic hydrocarbons.

This compound's solubility reflects its ionic nature, where the charged sulfonate groups interact favorably with water molecules, allowing for significant dissolution. As a result, it can often be found in applications requiring aqueous dyes, where effective distribution and uniform coverage are vital.

Moreover, the solubility behavior can shift with changes in pH, temperature, and concentration, making it important for users to consider the specific conditions under which they are working to achieve optimal results.

Interesting facts

Interesting Facts about Disodium 3-Hydroxy-4-(2,4,5-trimethylphenyl)azo-naphthalene-2,7-disulfonate

Disodium 3-hydroxy-4-(2,4,5-trimethylphenyl)azo-naphthalene-2,7-disulfonate is a fascinating compound that showcases the complexity of azo dyes. Azo dyes are characterized by the presence of the azo group (–N=N–), which is vital for their vivid colors and varied applications.

Key Features:

  • Colorant Properties: This compound is notable for its brilliant coloring properties, making it valuable in a wide range of applications, from textiles to food additives.
  • pH Sensitivity: Its performance can vary with changes in pH, which is a characteristic trait of many azo compounds, allowing it to be used as a pH indicator in various chemical reactions.
  • Ecosystem Considerations: As with many synthetic dyes, it is essential to consider environmental impact, particularly regarding biodegradability and potential toxicity.
  • Applications: It finds utility not only in the dyeing of cotton and wool fabrics but also in the design of cosmetic products due to its stability and colorfastness.

Noteworthy Points:

With its unique molecular structure, this compound allows chemists to explore:

  • The influence of substituent groups on the electronic properties of the dye, impacting color generation.
  • Potential applications in innovative fields such as photonics and sensor technology due to its color-changing possibilities.

In a quote from a notable chemist: "Understanding the intricate dance of molecular interactions in azo dyes is akin to deciphering a vibrant piece of art; each element plays a critical role in the final masterpiece."
This observation emphasizes the artistic and scientific collaboration in the world of chemical compounds.

Overall, disodium 3-hydroxy-4-(2,4,5-trimethylphenyl)azo-naphthalene-2,7-disulfonate exemplifies the rich potential of azo dyes, providing insights into both practical applications and fundamental chemical principles.

Synonyms
PONCEAU 3R
3564-09-8
C.I. Food Red 6
Ponceau RN
Ponceau 3R Lake
Ponceau 3RN
Maple Ponceau 3R
Dolkwal Ponceau 3R
Usacert Red No. 1
CI Food 6
Ponceau 3R sodium salt
D and C Red 15
FDC Red 1
AF Red No. 1
C.I. Food Red 6, disodium salt
Cerven kumidinova
Cerven kumidinova [Czech]
A.F. Red No. 1
CCRIS 527
Ext D and C Red No. 15
FA32R9S74X
CI Food Red 6, disodium salt
Cerven potravinarska 6 [Czech]
CI 16155
DTXSID7021231
Cerven potravinarska 6
FD and C Red No. 1
HSDB 2946
C.I. 16155
2,7-Naphthalenedisulfonic acid, 3-hydroxy-4-((2,4,5-trimethylphenyl)azo)-, disodium salt
EINECS 222-638-0
NSC 10461
PONCEAU 3R [II]
PONCEAU 3R [MI]
PONCEAU 3R [HSDB]
PONCEAU 3R [IARC]
Sodium cumeneazo-beta-naphtholdisulphonate
Sodium cumeneazo-beta-naphthol disulfonate
Sodium cumeneazo-beta-naphthol disulphonate
AKA502
DTXCID801231
RED NO. 502
FD&C RED NO. 1 (DELISTED)
NSC-10461
3-Hydroxy-4-((2,4,5-trimethylphenyl)azo)-2,7-naphthalenedisulfonic acid disodium salt
C.I. FOOD RED 6 DISODIUM SALT
3-Hydroxy-4((2,4,5-trimethylphenyl)azo)-2,7-naphthalenedisulfonic
PONCEAU 3R (II)
Disodium 3-hydroxy-4-((2,4,5-trimethylphenyl)azo)-2,7-naphthalenedisulfonate
Disodium 3-hydroxy-4-((2,4,5-trimethylphenyl)azo)-2,7-naphthalenedisulphonate
Disodium 3-hydroxy-4-((2,4,5-trimethylphenyl)azo)naphthalene-2,7-disulphonate
PONCEAU 3R (IARC)
3-Hydroxy-4-((2,4,5-trimethylphenyl)azo)-2,7-naphthalenedisulphonic acid, disodium salt
scarlet f
Disodium 3-hydroxy-4-[(2,4,5-trimethylphenyl)azo]-2,7-naphthalenedisulfonate
japan red 1
2,7-NAPHTHALENEDISULFONIC ACID, 3-HYDROXY-4-(2-(2,4,5-TRIMETHYLPHENYL)DIAZENYL)-, SODIUM SALT (1:2)
japan red 502
NSC10461
2,7-Naphthalenedisulfonic acid, 3-hydroxy-4-[(2,4,5-trimethylphenyl)azo]-, disodium salt
Disodium 3-hydroxy-4-[(2,4,5-trimethylphenyl)azo]naphthalene-2,7-disulphonate
2,7-Naphthalenedisulfonic acid, 3-hydroxy-4-[2-(2,4,5-trimethylphenyl)diazenyl]-, sodium salt (1:2)
USACERT RED NO 1
AF RED NO 1
FD AND C RED NO 1
FD AND C RED NO.1
AKA502 [INCI]
EXT D AND C RED NO 15
Sodium cumeneazobetanaphtholdisulphonate
Sodium cumeneazobetanaphthol disulfonate
3-hydroxy-4-((2,4,5-trimethylphenyl)azo)-2,7-naphthalenedisulfonic acid, disodium salt
disodium 3-hydroxy-4-((2,4,5-trimethylphenyl)azo)-2,7-naphthalenedisulfonic acid
Sodium cumeneazobetanaphthol disulphonate
C.I. Food Red 6, disodium salt (8CI)
Disodium 3hydroxy4((2,4,5trimethylphenyl)azo)2,7naphthalenedisulfonate
Disodium 3hydroxy4((2,4,5trimethylphenyl)azo)2,7naphthalenedisulphonate
2,7Naphthalenedisulfonic acid, 3hydroxy4((2,4,5trimethylphenyl)azo), disodium salt
3Hydroxy4((2,4,5trimethylphenyl)azo)2,7naphthalenedisulphonic acid, disodium salt
DISODIUM 3-HYDROXY-4-((2,4,5-TRIMETHYLPHENYL)AZO)-2,4-NAPHTHALENEDISULPHONATE
DISODIUM 3-HYDROXY-4-((2,4,5-TRIMETHYLPHENYL)AZO)-2,7-NAPHTHALENEDISULPHONIC ACID
FD & C red no. 1
disodium 3-hydroxy-4-[(E)-(2,4,5-trimethylphenyl)diazenyl]naphthalene-2,7-disulfonate
disodium;3-hydroxy-4-[(2,4,5-trimethylphenyl)diazenyl]naphthalene-2,7-disulfonate
Sodium 3-hydroxy-4-((2,4,5-trimethylphenyl)diazenyl)naphthalene-2,7-disulfonate
C.I.16155
PONCEAU3R
pon-ceau 3r
disodium (4Z)-3-oxo-4-[2-(2,4,5-trimethylphenyl)hydrazin-1-ylidene]naphthalene-2,7-disulfonate
starbld0009511
UNII-FA32R9S74X
C19H16N2Na2O7S2
SCHEMBL1268487
SCHEMBL1268489
SCHEMBL3624402
CHEMBL3186386
Ponceau 3R, analytical standard
CHEBI:176136
IZJTYWDKWZYJNW-GQKUHHGYSA-L
Tox21_202788
NCGC00260334-01
CAS-3564-09-8
NS00020802
NS00083141
G91152
disodium;3-hydroxy-4-[(2,4,5-trimethylphenyl)diazenyl]naphthalene-2,7-disulonate