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4-aminonaphthalene-1,5-disulfonic acid

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Identification
Molecular formula
C10H9NO6S2
CAS number
521-58-4
IUPAC name
4-aminonaphthalene-1,5-disulfonic acid
State
State

At room temperature, 4-aminonaphthalene-1,5-disulfonic acid is typically in a solid crystalline form. It is usually stable, though it should be kept in a dry environment to prevent any moisture absorption, which could affect its reactivity and usability in various applications.

Melting point (Celsius)
300.00
Melting point (Kelvin)
573.00
Boiling point (Celsius)
500.00
Boiling point (Kelvin)
773.00
General information
Molecular weight
287.30g/mol
Molar mass
287.2960g/mol
Density
1.6800g/cm3
Appearence

4-Aminonaphthalene-1,5-disulfonic acid typically appears as a solid crystalline powder. It can vary from white to off-white or slightly yellowish in color, depending on the level of purity and any particular impurities that might be present. It should be stored in a tightly closed container, protected from moisture.

Comment on solubility

Solubility of 4-aminonaphthalene-1,5-disulfonic acid

4-aminonaphthalene-1,5-disulfonic acid is a sulfonated derivative of aminonaphthalene and exhibits unique solubility characteristics that are important to understand for its applications and behavior in various environments.

This compound is known to be highly soluble in water, attributed to the presence of multiple sulfonic acid groups, which facilitate hydrogen bonding with water molecules. Here are some critical solubility aspects:

  • High solubility in polar solvents: The sulfonic groups increase the polarity of the compound, enhancing its solubility in polar solvents such as water.
  • Limited solubility in non-polar solvents: Due to its polar nature, it is sparingly soluble in organic solvents like hexane or benzene.
  • Effect of pH: The solubility can vary with pH, as the ionization state of the sulfonic acids can affect dissolution in different pH environments.

In summary, the solubility profile of 4-aminonaphthalene-1,5-disulfonic acid is primarily influenced by its polar functional groups, making it a highly soluble compound in aqueous solutions while being incompatible with non-polar solvents.

Interesting facts

Discovering 4-Aminonaphthalene-1,5-Disulfonic Acid

4-Aminonaphthalene-1,5-disulfonic acid is a fascinating organic compound that belongs to the class of sulfonated aromatic compounds. Known for its vibrant electron-rich structure, this compound plays a crucial role in various fields. Here are some engaging facts about it:

  • Versatile Applications: This compound is primarily utilized as a dye precursor and is particularly important in the synthesis of azo dyes. These dyes are widely used in textiles, food, and cosmetic industries.
  • pH Indicator: Due to its acidic nature, 4-aminonaphthalene-1,5-disulfonic acid can function as a pH indicator in various chemical reactions, allowing scientists to monitor changes in acidity.
  • Synthesis of Advanced Materials: The compound is also used in the development of advanced materials including polymers and polymers containing sulfonic acid functional groups, which can improve properties like water retention and ion exchange.
  • Biological Studies: Its derivatives have been explored in biological studies for potential therapeutic applications, highlighting the compound's importance in pharmaceutical research.
  • Research Significance: Researchers studying the environmental impact of dyes and sulfonated compounds frequently reference 4-aminonaphthalene-1,5-disulfonic acid, making it a key player in environmental chemistry.

With its multifaceted roles and significant contributions across different scientific disciplines, 4-aminonaphthalene-1,5-disulfonic acid continues to capture the interest of chemists and industry professionals alike, proving that even the most specialized compounds can have widespread importance.

Synonyms
117-55-5
4-aminonaphthalene-1,5-disulfonic acid
1,5-NAPHTHALENEDISULFONIC ACID, 4-AMINO-
Amino-S acid
4-Amino-1,5-naphthalenedisulfonic acid
1-Naphthylamine-4,8-disulfonic acid
4-Aminonaphthalene-1,5-disulphonic acid
1-Naphthylamine-4,8-disulphonic acid
1-Aminonaphthalene-4,8-disulfonic acid
NSC 5526
NSC-5526
EINECS 204-196-0
alpha-Naphthylamine-4,8-disulfonic acid
BRN 2764005
S8Q5P7M5R9
DTXSID70151654
4-amino-1,5-naphthalenedisulphonic acid
1,5-NAPHTHALENEDISULPHONIC ACID, 4-AMINO-
AminoS acid
NSC5526
starbld0008463
CBMicro_015280
UNII-S8Q5P7M5R9
SCHEMBL159399
CHEMBL302641
DTXCID9074145
1Naphthylamine4,8disulphonic acid
1Aminonaphthalene4,8disulfonic acid
4Amino1,5naphthalenedisulfonic acid
4Aminonaphthalene1,5disulphonic acid
alphaNaphthylamine4,8disulfonic acid
1,5Naphthalenedisulfonic acid, 4amino
.alpha.-Naphthylamine-4,8-disulfonic acid
NS00023790