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Methyl Orange

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Identification
Molecular formula
C14H15N3O3S
CAS number
547-58-0
IUPAC name
4-[4-(dimethylamino)phenyl]azobenzenesulfonic acid
State
State

At room temperature, methyl orange is typically found as a solid in its salt form, often used dissolved in a solvent like ethanol when prepared for use as an indicator.

Melting point (Celsius)
300.00
Melting point (Kelvin)
573.00
Boiling point (Celsius)
0.00
Boiling point (Kelvin)
0.00
General information
Molecular weight
327.34g/mol
Molar mass
327.3340g/mol
Density
1.2800g/cm3
Appearence

Methyl orange is a reddish-orange powder. It is insoluble in water but soluble in ethanol. The powder is typically used in its salt form, giving an orange-red solution.

Comment on solubility

Solubility of 4-[4-(dimethylamino)phenyl]azobenzenesulfonic acid

The solubility of 4-[4-(dimethylamino)phenyl]azobenzenesulfonic acid, a complex organic compound, exhibits several noteworthy characteristics:

  • Water Solubility: This compound is generally soluble in water due to the presence of its sulfonic acid group, which enhances its ability to interact with water molecules.
  • Organic Solvents: It may have limited solubility in nonpolar organic solvents, owing to its polar functional groups, which can impede solvation by nonpolar media.
  • pH Dependence: The solubility can vary with pH; it is expected to be more soluble in acidic conditions where the sulfonate group may remain protonated.

As a result, one might say that "the solubility of 4-[4-(dimethylamino)phenyl]azobenzenesulfonic acid reflects the balance between its polar and nonpolar characteristics, making it an interesting compound in the realm of solubility studies." Understanding the solubility behavior is crucial for its applications, particularly in dye chemistry and analytical chemistry.

Interesting facts

Exploring 4-[4-(Dimethylamino)phenyl]azobenzenesulfonic Acid

4-[4-(Dimethylamino)phenyl]azobenzenesulfonic acid, often abbreviated as DMABSA, is a fascinating compound that plays a significant role in various chemical and industrial applications. Here are some intriguing facts about this compound:

  • Dyes and Pigments: DMABSA is primarily known for its use in the production of dyes and pigments. Its vibrant color and stability make it a valuable component in the textile industry.
  • pH Indicator: This compound functions as a pH indicator due to its ability to change color depending on the acidity or alkalinity of a solution. Such characteristics are particularly useful in titrations and other chemical analysis procedures.
  • Azo Compounds: Being part of the azo compound family, DMABSA contains a -N=N- (azo) bond, which is a crucial feature that gives azo compounds their unique properties, including intense colors.
  • Biological Applications: Researchers are exploring the potential of DMABSA and its derivatives in biological applications. Studies suggest that some azo compounds can exhibit antimicrobial and anticancer properties, making them subjects of interest in medicinal chemistry.
  • Environmental Considerations: With the growing concern over environmental pollution, the use and disposal of azo dyes have prompted investigations into their biodegradability and potential toxicity. DMABSA is often examined for its environmental impact, furthering the importance of sustainable practices in the dye industry.

In summary, 4-[4-(dimethylamino)phenyl]azobenzenesulfonic acid showcases an intersection of aesthetics, functionality, and environmental responsibility. As research advances, this compound may unveil even more diverse applications and underscore the importance of responsibly managing chemical substances in our world.

Synonyms
Benzenesulfonic acid, 4-(2-(4-(dimethylamino)phenyl)diazenyl)-
Benzenesulfonic acid, 4-[2-[4-(dimethylamino)phenyl]diazenyl]-
502-02-3
Benzenesulfonic acid, 4-[[4-(dimethylamino)phenyl]azo]-
Methyl orange (acid form)
CHEMBL220397
NSC-9595
p-[[p-(Dimethylamino)phenyl]azo]benzenesulfonic acid
606126-34-5
4-[[4-(dimethylamino)phenyl]diazenyl]benzenesulfonic acid
4-dimethylaminoazobenzene-4'-sulfonic acid
p-((p-(Dimethylamino)phenyl)azo)benzenesulfonic acid
4-((4-(dimethylamino)phenyl)diazenyl)benzenesulfonic acid
Benzenesulfonic acid, 4-((4-(dimethylamino)phenyl)azo)-
4-{(E)-[4-(dimethylamino)phenyl]diazenyl}benzenesulfonic acid
4-{2-[4-(dimethylamino)phenyl]diazen-1-yl}benzene-1-sulfonic acid
Benzenesulfonic acid, p-((p-(dimethylamino)phenyl)azo)-
Benzenesulfonic acid, p-[[p-(dimethylamino)phenyl]azo]-
4-{[4-(DIMETHYLAMINO)PHENYL]DIAZENYL}BENZENESULFONIC ACID
NSC 9595
EINECS 207-932-9
4-Chlorobenzimidazole
4'-Sulfo-N,N-dimethyl-4-aminoazobenzene
4-(4-Sulfophenylazo)-N,N-dimethylaniline
JE4B4UF7ZV
4-(Dimethylamino)azobenzene-4'-sulfonic acid
4-(4-Dimethylaminophenylazo)benzenesulfonic acid
CBDivE_014233
SCHEMBL296471
4-[[4-(Dimethylamino)phenyl]azo]benzenesulfonic acid
CHEMBL1092016
DTXSID3060112
NSC9595
DTXSID201043663
BDBM50206429
STL268852
AKOS015909260
NS00032014
p-(p'-Dimethylaminophenylazo)benzene sulfonate
EN300-226550
4-((4-(Dimethylamino)phenyl)azo)benzenesulphonic acid
4-[2-[4-(Dimethylamino)phenyl]diazenyl]benzenesulfonic acid
4-{2-[4-(dimethylamino)phenyl]diazen-1-yl}benzene-1-sulfonicacid
4-((4-(DIMETHYLAMINO)PHENYL)DIAZENYL)BENZENE-1-SULFONIC ACID
4-[(1E)-2-[4-(dimethylamino)phenyl]diazen-1-yl]benzenesulfonic acid