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Acid Orange 7

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Identification
Molecular formula
C16H11N2NaO4S
CAS number
633-96-5
IUPAC name
6-amino-3-[4-(4-aminophenyl)azo-2-methoxy-5-methyl-phenyl]azo-4-hydroxy-naphthalene-2-sulfonic acid
State
State

At room temperature, Acid Orange 7 is typically in a solid state, appearing as a crystalline powder.

Melting point (Celsius)
310.00
Melting point (Kelvin)
583.00
Boiling point (Celsius)
0.00
Boiling point (Kelvin)
0.00
General information
Molecular weight
350.33g/mol
Molar mass
350.3300g/mol
Density
1.4760g/cm3
Appearence

Acid Orange 7 appears as an orange to brown crystalline powder or solid. It is commonly used as a dye in various applications, including textile and food industries.

Comment on solubility

Solubility of 6-amino-3-[4-(4-aminophenyl)azo-2-methoxy-5-methyl-phenyl]azo-4-hydroxy-naphthalene-2-sulfonic acid

The solubility of 6-amino-3-[4-(4-aminophenyl)azo-2-methoxy-5-methyl-phenyl]azo-4-hydroxy-naphthalene-2-sulfonic acid can be quite intricate due to its complex structure. This compound, characterized by multiple functional groups, displays various solubility behaviors depending on the medium it is placed in. Here are some insights:

  • Polar solvents: The presence of sulfonic acid and hydroxy groups suggests that this compound is likely to dissolve well in polar solvents, such as water, due to strong hydrogen bonding interactions.
  • Non-polar solvents: In contrast, solubility in non-polar solvents is expected to be low, as the extensive functional groups favor interactions with polar environments.
  • pH dependency: The solubility can also vary with pH changes. In acidic conditions, the sulfonic acid group may remain protonated, affecting solubility differently than in neutral or basic environments.
  • Temperature effects: Similar to many organic compounds, increased temperature may enhance solubility in polar solvents, facilitating better dissolution.

In conclusion, while the exact solubility can vary based on specific conditions, the overall tendency aligns with the principles of solubility rules, highlighting the importance of the polar nature of the solvent when working with this azo compound. Understanding these factors is crucial for applications in dyeing and other chemical processes.

Interesting facts

Interesting Facts about 6-amino-3-[4-(4-aminophenyl)azo-2-methoxy-5-methyl-phenyl]azo-4-hydroxy-naphthalene-2-sulfonic acid

This compound is a fascinating example of a dye known for its vibrant color and structural complexity. It is classified as an azo dye, which refers to a class of compounds characterized by the presence of one or more azo (–N=N–) groups. Here are some key points to note:

  • Applications: One of the primary uses of this compound is in the textile industry, where it serves as a dye for fabrics, providing rich hues and excellent colorfastness.
  • Environmental Impact: Azo dyes can be scrutinized for their environmental implications, as some may release harmful byproducts upon degradation. However, research continues to develop safer alternatives.
  • Color Variability: The color produced by this compound can vary significantly based on pH and solvent conditions; a feature that is particularly useful in creating products that require color stability under various circumstances.
  • Synthetic Routes: The synthesis of this compound typically involves multiple reaction steps, including diazotization and coupling reactions, showcasing the intricate methods used in organic synthesis.

Moreover, its structure is notable for incorporating a sulfonic acid group, which enhances its water solubility. As stated by chemists, “The utility of azo compounds lies not just in their brilliance but also in their adaptability to various applications.”
This compound is an embodiment of the complexities and possibilities that exist within organic chemistry.

Synonyms
25180-12-5
EINECS 246-713-2
6-Amino-3-((4-((4-aminophenyl)azo)-6-methoxy-m-tolyl)azo)-4-hydroxynaphthalene-2-sulphonic acid
SCHEMBL12915463
DTXSID70863063
XEOHZCPNNCIHDP-UHFFFAOYSA-N
DTXSID901040965
6-Amino-3-[[4-[(4-aminophenyl)azo]-6-methoxy-m-tolyl]azo]-4-hydroxynaphthalene-2-sulfonic acid
NS00049981
2-Naphthalenesulfonic acid, 6-amino-3-[2-[4-[2-(4-aminophenyl)diazenyl]-2-methoxy-5-methylphenyl]diazenyl]-4-hydroxy-
6-Amino-3-(2-{4-[(4-aminophenyl)diazenyl]-2-methoxy-5-methylphenyl}hydrazinylidene)-4-oxo-3,4-dihydronaphthalene-2-sulfonic acid