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Sulfanilic acid

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Identification
Molecular formula
C6H7ClNO4S
CAS number
121-57-3
IUPAC name
3-amino-5-chloro-4-hydroxy-benzenesulfonic acid
State
State

Sulfanilic acid is typically a solid at room temperature. It appears as a crystalline substance, which is indicative of its solid state.

Melting point (Celsius)
288.00
Melting point (Kelvin)
561.15
Boiling point (Celsius)
750.00
Boiling point (Kelvin)
1 023.15
General information
Molecular weight
173.60g/mol
Molar mass
173.5970g/mol
Density
1.4850g/cm3
Appearence

Sulfanilic acid typically appears as a white crystalline solid. It is often found in the form of crystals or crystalline powder. Being a sulfonic acid, it is soluble in water and can form a clear solution.

Comment on solubility

Solubility of 3-amino-5-chloro-4-hydroxy-benzenesulfonic acid

The compound 3-amino-5-chloro-4-hydroxy-benzenesulfonic acid, also known as H-acid, displays distinct solubility characteristics that are crucial for its applications in various industries, particularly in dye manufacturing and other chemical formulations.

Solubility Characteristics:

  • Water Solubility: H-acid is highly soluble in water due to its sulfonic acid group, which enhances its interaction with polar solvents.
  • Solvent Variability: While it dissolves well in water, its solubility in organic solvents is considerably lower, making it less suitable for non-polar applications.
  • pH Influence: The solubility can be affected by the pH of the solution; at lower pH levels, the compounds tend to be more protonated, potentially impacting their solubility behavior.

In summary, the solubility of 3-amino-5-chloro-4-hydroxy-benzenesulfonic acid is predominantly governed by its structure, functionality, and the nature of the solvent. This compound is exceptionally soluble in polar solvents like water, which supports its utility in various chemical processes.

Interesting facts

Interesting Facts about 3-amino-5-chloro-4-hydroxy-benzenesulfonic acid

3-amino-5-chloro-4-hydroxy-benzenesulfonic acid, also known as Metanil Yellow, is an intriguing compound with several noteworthy aspects:

  • Dye and Pigment: This compound is primarily used as a synthetic dye in the textile industry. Its vibrant yellow color makes it a popular choice in various dyeing applications.
  • Analytical Tool: It serves as a reagent in analytical chemistry, particularly for the determination of certain metal ions. Its ability to form colored complexes with metals makes it valuable for quantitative analysis.
  • Biological Activity: Studies have suggested that derivatives of this compound might exhibit antimicrobial properties, which are of interest in pharmaceutical research.
  • Environmental Impact: Due to its widespread use, there have been concerns about the *potential toxicity* of this compound, particularly regarding its effects on aquatic life. Hence, regulatory bodies monitor its use.
  • Synthesis: The synthesis of 3-amino-5-chloro-4-hydroxy-benzenesulfonic acid is a fascinating example of organic transformation, involving the selective substitution of functional groups on the benzene ring.

As global awareness of sustainable chemistry rises, the investigation into safer alternatives to harmful compounds like 3-amino-5-chloro-4-hydroxy-benzenesulfonic acid is becoming increasingly important. Its diverse applications and the ongoing research into its effects make it a compound worth studying.

Synonyms
5857-94-3
3-Amino-5-chloro-4-hydroxybenzenesulfonic acid
Benzenesulfonic acid, 3-amino-5-chloro-4-hydroxy-
UTG72D92WW
3-Amino-5-chloro-4-hydroxybenzenesulphonic acid
DTXSID6064032
1-AMINO-3-CHLORO-2-HYDROXY-5-BENZENESULFONIC ACID
DTXCID8042422
227-482-7
METANILIC ACID, 5-CHLORO-4-HYDROXY-
6-Chloro-2-aminophenol-4-sulfonic acid
BRN 3285003
5-Chloro-4-hydroxymetanilic acid
EINECS 227-482-7
Kyselina 2-chlor-6-aminofenol-4-sulfonova [Czech]
Kyselina 2-chlor-6-aminofenol-4-sulfonova
UNII-UTG72D92WW
SCHEMBL6935562
QGTXBWMKRGHPDD-UHFFFAOYSA-N
AKOS016010039
LS-13120
NS00020847