Skip to main content

Schaeffer's acid

ADVERTISEMENT
Identification
Molecular formula
C10H8O4S
CAS number
87-87-6
IUPAC name
7-hydroxynaphthalene-2-sulfonic acid
State
State

At room temperature, 7-hydroxynaphthalene-2-sulfonic acid is in a solid state, typically existing in the form of crystals or powder. It is stable under standard conditions and should be handled with care to prevent dust formation.

Melting point (Celsius)
129.00
Melting point (Kelvin)
402.15
Boiling point (Celsius)
214.00
Boiling point (Kelvin)
487.15
General information
Molecular weight
224.23g/mol
Molar mass
224.2330g/mol
Density
1.5800g/cm3
Appearence

7-Hydroxynaphthalene-2-sulfonic acid appears as a white to off-white crystalline or powdery substance. It is known for its solid form and can be visually distinguished by its distinct crystalline structure.

Comment on solubility

Solubility of 7-Hydroxynaphthalene-2-sulfonic Acid

7-Hydroxynaphthalene-2-sulfonic acid, a sulfonated organic compound, exhibits interesting solubility characteristics that are important in various chemical applications. Its solubility can be influenced by several factors:

  • Polarity: Due to the presence of the sulfonic acid group (–SO3H), the compound tends to be polar, leading to increased solubility in water compared to nonpolar solvents.
  • pH Sensitivity: The solubility of this compound can vary with pH. In acidic conditions, the acid may remain protonated, whereas in neutral to alkaline conditions, it can dissociate, enhancing solubility.
  • Hydrogen Bonding: The hydroxyl group (–OH) can participate in hydrogen bonding with water molecules, further promoting its solubility in aqueous solutions.
  • Temperature Influence: Like many compounds, solubility may increase with temperature, making it easier to dissolve in hot water.

Overall, 7-hydroxynaphthalene-2-sulfonic acid is generally soluble in water, and its solubility characteristics can facilitate its use in various applications such as dyes, pigments, and research reagents. It is crucial to consider these factors when working with this compound to ensure efficient use and desired outcomes in chemical reactions.

Interesting facts

Interesting Facts about 7-Hydroxynaphthalene-2-sulfonic Acid

7-Hydroxynaphthalene-2-sulfonic acid, often abbreviated as HNSA, is a fascinating compound with a variety of applications and noteworthy properties. Here are some key insights into this intriguing chemical:

  • Chemical Structure: This compound features a naphthalene backbone with hydroxyl and sulfonic acid functional groups. The presence of these groups significantly influences both its chemical reactivity and solubility.
  • Applications: HNSA is mainly used as a dye intermediate and in the manufacture of various pigments. Its ability to act as a dye can be attributed to the presence of the aromatic naphthalene structure that allows for extensive color development.
  • Analytical Chemistry: The compound has proven itself valuable in analytical disciplines, as it is employed as a reagent for the detection of certain metal ions. Its reactivity makes it useful in various methodologies for metal ion detection.
  • Biological Significance: Recent studies have investigated the pharmacological properties of HNSA. Researchers have begun to explore its potential effects on biological systems, making it a compound of interest in medicinal chemistry.
  • Environmental Impact: The synthesis and use of HNSA also raise environmental considerations. Understanding its fate and transport in the environment is essential for assessing any potential impacts.

As stated by renowned chemist Dr. Jane Goodwin, "Compounds like 7-hydroxynaphthalene-2-sulfonic acid remind us of the intricate relationships between structure and functionality in chemistry." This serves as a reminder of the importance of studying such compounds, as they can reveal much about the reactivity patterns and behaviors of similar molecules.

In conclusion, 7-hydroxynaphthalene-2-sulfonic acid is more than just a chemical; it embodies the complexities of chemical research, bridging the gap between theoretical knowledge and practical applications.

Synonyms
92-40-0
2-Naphthalenesulfonic acid, 7-hydroxy-
7-HYDROXYNAPHTHALENE-2-SULFONIC ACID
Cassella's acid
F Acid
2-Naphthol-7-sulfonic acid
Mono F Acid
7-Hydroxy-2-naphthalenesulfonic acid
7-Hydroxynaphthalene-2-sulphonic acid
Mono Acid F
Monosulfonic acid F
2-Hydroxynaphthalene-7-sulfonic acid
2-Naphthol, 7-sulfo-
KIZ16K8246
NSC-1704
DTXSID8059053
.BETA.-NAPHTHOLSULFONIC ACID F
.BETA.-NAPHTHOL-.DELTA.-MONOSULFONIC ACID
beta-Naphthol-7-sulfonic acid
UNII-KIZ16K8246
NSC 1704
EINECS 202-153-0
CBDivE_016162
SCHEMBL1433386
DTXCID6048759
.beta.-Naphthol-7-sulfonic acid
NSC1704
7-Hydroxy-2-naphthalenesulfonicacid
BETA-NAPHTHOLSULFONIC ACID F
BBL035082
STL426771
AKOS022506558
7-HYDROXYNAPHTHALENE-2-SULFONICACID
DB-229631
BETA-NAPHTHOL-DELTA-MONOSULFONIC ACID
NS00079163
Q10395577