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1-Naphthylamine-2-sulfonic acid

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Identification
Molecular formula
C10H9NO3S
CAS number
81-16-3
IUPAC name
1-aminonaphthalene-2-sulfonic acid
State
State

At room temperature, 1-naphthylamine-2-sulfonic acid exists in a solid state, typically as a crystalline solid or powder.

Melting point (Celsius)
154.00
Melting point (Kelvin)
427.15
Boiling point (Celsius)
383.00
Boiling point (Kelvin)
656.15
General information
Molecular weight
223.27g/mol
Molar mass
223.2670g/mol
Density
1.5800g/cm3
Appearence

1-Naphthylamine-2-sulfonic acid typically appears as a white to off-white crystalline solid. It may also be available in powder form, which is commonly used in various industrial applications, particularly in the dye industry.

Comment on solubility

Solubility of 1-aminonaphthalene-2-sulfonic acid

1-aminonaphthalene-2-sulfonic acid is known for its intriguing solubility properties. As a sulfonic acid, it possesses a high degree of polarity which contributes to its solubility in various solvents. Here are some key points regarding its solubility:

  • Water Solubility: This compound is highly soluble in water due to the presence of the sulfonic acid group (-SO3H) which can readily ionize and interact with water molecules.
  • Solvent Compatibility: 1-aminonaphthalene-2-sulfonic acid is also soluble in polar organic solvents, allowing for versatility in its use in chemical reactions and formulations.
  • pH Influence: The solubility can be affected by the pH of the solution. In acidic conditions, the sulfonic group remains protonated, while in neutral or alkaline conditions, it can deprotonate, potentially enhancing solubility.
  • Temperature Effects: Like many organic compounds, solubility may increase with temperature, making it easier to dissolve in heated solutions.

The ability of 1-aminonaphthalene-2-sulfonic acid to dissolve in a variety of environments underscores its significance in chemical processes. As stated, "soluble in water and polar solvents," it finds utility in both laboratory and industrial applications.

Overall, the solubility profile of this compound is a critical factor in its reactivity and utility in different chemical contexts.

Interesting facts

Interesting Facts about 1-Aminonaphthalene-2-Sulfonic Acid

1-Aminonaphthalene-2-sulfonic acid is a fascinating compound that has garnered significant attention in the field of chemistry. Here are some engaging insights about this unique aromatic sulfonic acid:

  • Versatile Intermediary: This compound serves as an important building block in organic synthesis, especially for producing dyes and pigments. It plays a crucial role in the formation of azo dyes, which are widely used in textiles and food coloring.
  • Environmental Relevance: Due to its sulfonic acid group, 1-aminonaphthalene-2-sulfonic acid exhibits water solubility, making it a subject of study in wastewater treatment processes. Understanding its behavior can help in tackling environmental challenges related to dye pollution.
  • Ancient Roots into Modern Science: The development of amino-naphthalene derivatives dates back to the 19th century, showcasing the evolution of organic chemistry as a discipline. These compounds laid the groundwork for subsequent synthetic innovations.
  • Research Applications: Beyond its use in dye manufacturing, this sulfonic acid is valuable in various chemical research applications. Scientists often study its reactions and interactions to discover new methodologies in synthesizing complex organic molecules.
  • Health and Safety Considerations: While 1-aminonaphthalene-2-sulfonic acid has practical uses, it is important to handle it with care. Potential risks, such as toxicity and environmental impact, have prompted regulations regarding its use.

In conclusion, 1-aminonaphthalene-2-sulfonic acid is not only significant for its applications in dye chemistry but also serves as a critical component in ongoing research to better understand organic transformations and environmental impacts. As we continue to explore its properties, we unlock new possibilities in the realms of both science and industry.

Synonyms
81-06-1
1-naphthylamine-2-sulfonic acid
1-aminonaphthalene-2-sulfonic acid
1-AMINO-2-NAPHTHALENESULFONIC ACID
2-Naphthalenesulfonic acid, 1-amino-
1-Aminonaphthalene-2-sulphonic acid
N3P4M2L23X
EINECS 201-320-5
DTXSID7058838
J4.351F
.ALPHA.-NAPHTHYLAMINE-2-SULFONIC ACID
UNII-N3P4M2L23X
1.4-Naphthylaminsulfosaure
SCHEMBL156836
1-Naphthylamine-2-sulfonicacid
DTXCID0048185
ONZWNZGVZFLMNZ-UHFFFAOYSA-N
AKOS022506535
ALPHA-NAPHTHYLAMINE-2-SULFONIC ACID
NS00022808
Q27284515
201-320-5