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4-sulfophthalic acid

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Identification
Molecular formula
C8H6O7S
CAS number
6362-79-4
IUPAC name
4-sulfophthalic acid
State
State

At room temperature, 4-sulfophthalic acid is in a solid state, typically found as a crystalline powder.

Melting point (Celsius)
208.00
Melting point (Kelvin)
481.00
Boiling point (Celsius)
0.00
Boiling point (Kelvin)
0.00
General information
Molecular weight
254.20g/mol
Molar mass
254.1950g/mol
Density
2.0450g/cm3
Appearence

4-Sulfophthalic acid typically appears as a white to off-white crystalline solid. Its appearance is characterized by its powdery or flaky nature. It is a hygroscopic compound, meaning it can absorb moisture from the air.

Comment on solubility

Solubility of 4-Sulfophthalic Acid

4-Sulfophthalic acid (C8H6O6S) is a sulfonic acid derivative of phthalic acid. The solubility of this compound is quite notable due to several factors that influence its behavior in different solvents:

  • Water Solubility: 4-Sulfophthalic acid is highly soluble in water. Its solubility is attributed to the presence of the sulfonic group (-SO3H), which enhances the compound's ability to interact with water molecules through hydrogen bonding.
  • Polar Solvents: The compound exhibits good solubility in polar organic solvents. This characteristic allows it to be used effectively in various industrial applications where polarity plays a crucial role.
  • Non-Polar Solvents: In stark contrast, 4-sulfophthalic acid has limited solubility in non-polar solvents. This is due to the hydrophilic nature of the functional groups, which do not favor interactions with non-polar environments.

In summary, the solubility profile of 4-sulfophthalic acid can be summarized as follows:

  1. Highly soluble in water
  2. Moderately soluble in polar organic solvents
  3. Poorly soluble in non-polar solvents

Understanding the solubility behavior of 4-sulfophthalic acid is essential for its applications in different fields, including dye manufacturing and pharmaceuticals, where its solubility characteristics can greatly impact its utility.

Interesting facts

Interesting Facts About 4-Sulfophthalic Acid

4-Sulfophthalic acid is a fascinating compound that plays a significant role in various chemical applications and industrial processes. Here are some insightful facts about this important aromatic sulfonic acid:

  • Structural Significance: As a derivative of phthalic acid, 4-sulfophthalic acid's structure features a sulfonic acid group attached to the para position of the aromatic ring. This positioning is crucial for its reactivity and solubility.
  • Applications in Dyes: One of the most notable uses of 4-sulfophthalic acid is in the dye industry. It serves as an intermediate for synthesizing various dyes, particularly for textiles, where vibrant colors are required.
  • Role in Polymers: This compound is also employed in the manufacturing of certain polymers. It acts as a plasticizer and helps improve the flexibility and durability of the final product.
  • Research and Development: In research settings, 4-sulfophthalic acid is studied for its potential applications in pharmaceuticals. Its sulfonic acid group allows for unique interactions with biological molecules, making it a compound of interest in drug design.
  • Environmental Considerations: With increasing awareness of environmental sustainability, the presence of sulfonic acids, including 4-sulfophthalic acid, has drawn attention due to their roles in biodegradable materials and greener chemistry approaches.

As you explore the capabilities and properties of 4-sulfophthalic acid, remember that its versatile applications make it a vital compound in both industrial and research contexts, embodying the intersection of chemistry and innovation.

Synonyms
4-SULFOPHTHALIC ACID
89-08-7
1,2-Benzenedicarboxylic acid, 4-sulfo-
Phthalic acid, 4-sulfo-
4-Sulphophthalic acid
HSDB 5264
UNII-T1SM5DOM66
EINECS 201-881-6
T1SM5DOM66
4-sulfobenzene-1,2-dicarboxylic acid
NSC 100615
DTXSID6026535
NSC-100615
DTXCID506535
4-Sulfophthalic acid, 50% in water
4-Sulfophthalic Acid (50% w/w aq. soln.)
4-Sulfophthalic acid, 50% aq. soln.
4-Sulfo-1,2-benzenedicarboxylic Acid; 4-Sulfo-phthalic Acid; NSC 100615; NSC 163994
5-sulfophthalic acid
Phthalic acid, 4sulfo
1, 4-sulfo-
NCIOpen2_006963
SCHEMBL61251
4-Sulfophthalic acid solution
CHEMBL3182294
Phthalic acid, 4-sulfo-(8CI)
Tox21_202553
1,2Benzenedicarboxylic acid, 4sulfo
MFCD00007494
NSC100615
4-Sulfophthalic Acid (contains 3-Sulfophthalic Acid) (ca. 50% in Water)
AKOS005068176
CAS-89-08-7
NCGC00260102-01
BP-31217
FS183468
DB-057116
CS-0204821
NS00020038
Q27289554
4-Sulfophthalic acid (contains 3-sulfophthalic acid), 50% aqueous solution
201-881-6