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Molecule record

SULFANILIC ACID

C6H7NO3S

173.19 g/mol

2D structure for SULFANILIC ACID

Molecular properties

Formula
C6H7NO3S
Molar mass
173.19 g·mol−1
Exact mass
173.0147 Da
4
2
4
88.80 Ų
-0.6 (PubChem computed XLogP3-AA descriptor)
CAS
121-57-3
PubChem CID
8479

Interactions

Polarity
Often polar; exact polarity depends on size, substitution, and ionization state.
Acid-base behavior
Review ionizable groups and pKa data where available; ChemForge does not infer definitive acid-base state from identity alone.
Intermolecular forces
Assess dispersion, dipole interactions, hydrogen bonding, and ionic character from the functional groups shown.

Functional groups

Alkene
Aromatic ring
Phenol

Physical properties

PropertyValueConditionsSource
Logp-0.6PubChem computed XLogP3-AA descriptorPubChem(link only)

Common names and synonyms

  • 1-aminobenzene-4-sulfonic acid
  • 121-57-3
  • 4-Aminobenzenesulfonic acid
  • 4-Sulfanilic acid
  • 4-Sulfoaniline
  • AI3-15414
  • Aniline-4-sulfonic acid
  • Aniline-p-sulfonic acid
Show all 22 synonyms
  • Aniline-p-sulphonic acid
  • CCRIS 4576
  • CHEBI:27500
  • EINECS 204-482-5
  • HSDB 5590
  • Kyselina sulfanilova
  • NSC 7170
  • Sulfanilsaeure
  • Sulphanilic acid
  • UNII-434Z8C2635
  • p-Aminobenzenesulfonic acid
  • p-Aminophenylsulfonic acid
  • p-Anilinesulfonic acid
  • p-sulfoaniline

Structure identifiers

Canonical SMILES
C1=CC(=CC=C1N)S(=O)(=O)O
Isomeric SMILES
C1=CC(=CC=C1N)S(=O)(=O)O
InChI
InChI=1S/C6H7NO3S/c7-5-1-3-6(4-2-5)11(8,9)10/h1-4H,7H2,(H,8,9,10)
InChIKey
HVBSAKJJOYLTQU-UHFFFAOYSA-N
PubChem CID
8479

Spectroscopy

Tabs appear only for spectra stored with clear provenance.

Open library

IR spectrum

ChemArche Original Educational Content(redistributable)

Simulated FTIR trace

Predicted FTIR / %T

4 cm-1 resolution / deterministic instrument profile

Hover for cursor
4000350030002500200015001000500100500wavenumber (cm−1)transmittance (%)

Peak assignments

3350 cm−1broad O-H (simulated)
1645 cm−1C=C alkene (simulated)
3030 cm−1aromatic C-H (simulated)
1600 cm−1aromatic C=C (simulated)
2960 cm−1sp3 C-H (simulated)

Simulated NMR

On-demand educational prediction for SULFANILIC ACID; not experimental data.

Simulated EI mass spectrum

On-demand educational fragmentation for SULFANILIC ACID; not experimental data.

Sources

Molecule identity

Retrieved 8/7/2026. Reuse status is summarized by the badge; open the source for full details.

PubChem(link only)

simulated IR

ChemForge original educational simulation.

ChemArche Original Educational Content(redistributable)
Open source record