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8-Aminonaphthalene-1-sulfonic acid

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Identification
Molecular formula
C10H9NO3S
CAS number
81-17-8
IUPAC name
8-aminonaphthalene-1-sulfonic acid
State
State

At room temperature, 8-Aminonaphthalene-1-sulfonic acid is in the solid state, typically forming fine crystalline powder.

Melting point (Celsius)
185.00
Melting point (Kelvin)
458.00
Boiling point (Celsius)
335.00
Boiling point (Kelvin)
608.00
General information
Molecular weight
223.26g/mol
Molar mass
223.2550g/mol
Density
1.6900g/cm3
Appearence

8-Aminonaphthalene-1-sulfonic acid appears as a light brown to beige crystalline solid. The compound is typically presented as a fine powder.

Comment on solubility

Solubility of 8-Aminonaphthalene-1-sulfonic Acid

8-Aminonaphthalene-1-sulfonic acid (C10H9NO3S) displays intriguing solubility characteristics that are essential for its applications in various fields.

This compound is generally known to be:

  • Soluble in water: The sulfonic acid group enhances its polarity, making it soluble in polar solvents such as water.
  • Insoluble in nonpolar solvents: Due to its structural properties, it does not dissolve well in nonpolar solvents like hexane or benzene.

It's important to note the following factors affecting its solubility:

  • pH Variations: The solubility can increase or decrease with changes in pH, as the protonation state of the amino group may impact its interactions with water.
  • Temperature: Higher temperatures typically enhance solubility due to increased molecular motion, facilitating interactions with solvent molecules.
  • Presence of Salts: Ionic strength from added salts can affect solubility, often leading to decreased solubility through a phenomenon known as "salting out."

Understanding these solubility properties is vital for researchers and industry professionals who utilize 8-aminonaphthalene-1-sulfonic acid in syntheses, dyes, and various biochemical applications. As noted, “The solubility behavior can be as essential as the compound's reactivity.”

Interesting facts

Interesting Facts about 8-Aminonaphthalene-1-sulfonic Acid

8-Aminonaphthalene-1-sulfonic acid is a fascinating compound with numerous applications and characteristics that intrigue both chemists and industry professionals. Here are some key highlights:

  • Dye Production: This compound is primarily used in the synthesis of dyes, particularly in textiles and inks. Its derivatives are often employed for their vibrant colors.
  • pH Indicator: Due to its stability and color changes in different pH environments, 8-aminonaphthalene-1-sulfonic acid can function as a useful pH indicator in various analytical applications.
  • Research Importance: Scientifically, this compound has served as a model for studying the reactivity and properties of sulfonic acids in organic chemistry.
  • Biological Relevance: Some studies have pointed towards potential biological interactions, which can pave the way for research in pharmaceuticals and biochemistry.

The compound's unique structure, characterized by the naphthalene ring that grants it enhanced stability, makes it compelling for study. To quote a famous chemist, "Every compound has a story to tell, and 8-aminonaphthalene-1-sulfonic acid is no exception."

Overall, 8-aminonaphthalene-1-sulfonic acid exemplifies how specific compounds can bridge the gap between synthetic methods and their applications, making it a noteworthy subject in the field of chemistry.

Synonyms
82-75-7
peri Acid
8-AMINO-1-NAPHTHALENESULFONIC ACID
8-aminonaphthalene-1-sulfonic acid
1-Naphthylamine-8-sulfonic acid
1-Naphthalenesulfonic acid, 8-amino-
1-Aminonaphthalene-8-sulfonic acid
Naphthylaminemonosulfonic acid S
8-Aminonaphthalene-1-sulphonic acid
1-Amino-8-naphthalene sulfonate
NSC 7798
EINECS 201-437-1
UNII-0D93Y3MXV4
0D93Y3MXV4
CCRIS 8906
NSC-7798
.alpha.-Naphthylamine-8-sulfonic acid
1-AMINO-8-NAPHTHYLSULFONIC ACID
1-Aminonaphthalene-8-sulfonate
DTXSID2058881
1-NAPHTHYLAMINE-8-SULFONIC ACID [MI]
alpha-Naphthylamine-8-sulfonic acid
MFCD00035730
Perisaure
1-naphthylamine-8-sulfonic
BIDD:GT0781
SCHEMBL179823
8-aminonaphthalene-1-sulfonate
DTXCID6048258
NSC7798
1-Amino-8-naphthalenesulfonic acid
ALBB-025745
1-Aminonaphthalene-8-sulphonic acid
8-amino-1-naphthalene sulfonic acid
BBL034692
STL428863
AKOS008969346
FD10527
NCGC00339200-01
AC-11031
A0350
NS00038222
EN300-18397
AB01331397-02
AE-641/00781027
SR-01000198133
SR-01000198133-1
Q27236642
Z57188273
F0348-4039
201-437-1