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2-Naphthol-6-sulfonic acid

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Identification
Molecular formula
C10H8O4S
CAS number
84-87-7
IUPAC name
1-hydroxynaphthalene-2-sulfonic acid
State
State

At room temperature, 2-Naphthol-6-sulfonic acid is found in a solid state, typically in the form of a crystalline powder. It is stable under standard conditions.

Melting point (Celsius)
133.00
Melting point (Kelvin)
406.15
Boiling point (Celsius)
375.00
Boiling point (Kelvin)
648.15
General information
Molecular weight
224.23g/mol
Molar mass
224.2330g/mol
Density
1.5350g/cm3
Appearence

2-Naphthol-6-sulfonic acid appears as a white to slightly yellow crystalline powder, indicating its purity. The color may slightly vary depending on the level of impurities present.

Comment on solubility

Solubility of 1-Hydroxynaphthalene-2-sulfonic Acid

1-Hydroxynaphthalene-2-sulfonic acid, also known as 1-naphthol-2-sulfonic acid, is a compound that displays interesting solubility characteristics.

In water, this compound is:

  • Considered to be soluble due to the presence of a sulfonic acid group, which enhances its interaction with water molecules.

In organic solvents:

  • Position in the organic solvent hierarchy: 1-hydroxynaphthalene-2-sulfonic acid shows varying degrees of solubility, largely dependent on the polarity of the molecule.
  • It can be less soluble in non-polar solvents due to its polar functional groups.

This demonstrates that the presence of polar groups in a compound tends to increase solubility in polar solvents and decrease it in non-polar solvents. Therefore:

  • In polar solvents, such as water, the solubility is enhanced.
  • In non-polar solvents, the solubility is significantly reduced.

Overall, 1-hydroxynaphthalene-2-sulfonic acid's solubility profile makes it particularly useful in various applications, especially in aqueous environments.

Interesting facts

Interesting Facts about 1-Hydroxynaphthalene-2-Sulfonic Acid

1-Hydroxynaphthalene-2-sulfonic acid, often abbreviated as HN2SA, is a fascinating compound with numerous applications in various fields of science. Here are some compelling insights about this compound:

  • Versatile Intermediate: This compound serves as an important intermediate in the synthesis of various dye compounds. It is particularly valued in the dye industry for the production of acid dyes, which are widely used for dyeing textiles.
  • Role in Organic Chemistry: HN2SA plays a crucial role in organic reactions, specifically in the formation of naphthalene derivatives that are essential for further transformations within synthetic organic chemistry.
  • Environmental Suitability: The sulfonic acid group present in HN2SA contributes to its water solubility. This property is particularly beneficial in environmental chemistry, where it can be utilized as a biodegradable surfactant in various applications.
  • Biological Aspects: Research indicates that HN2SA may exhibit antimicrobial properties, making it an interesting compound for studies in microbiology and pharmaceuticals. Ongoing research is exploring its potential as a mild antimicrobial agent.
  • Historical Context: The study of this compound dates back to early organic chemistry, shedding light on how chemical processes and compounds have evolved over time in laboratory practices and industrial applications.

As we delve deeper into the chemistry of 1-hydroxynaphthalene-2-sulfonic acid, we gain insights not only into its structure and reactions but also into its crucial roles in industry and nature. This compound exemplifies how seemingly simple molecular structures can lead to intricate and essential applications in modern science.

Synonyms
2-Naphthalenesulfonic acid, 1-hydroxy-
567-18-0
Baum's acid
1-NAPHTHOL-2-SULFONIC ACID
KDF25YAO2H
1-Hydroxy-2-naphthalenesulfonic acid
1-Hydroxynaphthalene-2-sulphonic acid
EINECS 209-303-4
DTXSID6060345
SCHAEFFER'S .ALPHA.-ACID
1-NAPHTHOL-2-SULFONIC ACID [MI]
SCHAEFFER'S ALPHA-ACID
DTXCID1042102
209-303-4
1-hydroxynaphthalene-2-sulfonic acid
UNII-KDF25YAO2H
Naphtholsulfosaure
SCHEMBL88069
1-Naphthol-2-sulfonic acid,na salt
STL426768
AKOS022506551
NS00079761
Q10395575