Orthanilic acid

C6H7NO3SCAS 88-21-1173.19 g/mol

NH2SOOOH
Primary amineSulfonic acid

Properties

Molecular formula
C6H7NO3S
Molar mass
173.19 g/mol
Exact mass
173.0147 Da
Melting point
above 320 °C (decomposes)
Water solubility
10–50 g/L (22.2 °C)
logP
0.52Crippen estimate
Polar surface area
80.4 Ų
H-bond donors / acceptors
2 / 3
Rotatable bonds
1

Hazards

Danger
Corrosive (GHS05)Irritant (GHS07)

Aggregated from 84 ECHA notifications, via PubChem; a share says how many notifiers assign that statement.

Precautionary statements

P260, P264, P264+P265, P280, P301+P330+P331, P302+P361+P354, P304+P340, P305+P351+P338, P305+P354+P338, P316, P321, P337+P317, P363, P405, P501

Identifiers

CAS number
88-21-1
SMILES
Nc1ccccc1S(=O)(=O)O
InChIKey
ZMCHBSMFKQYNKA-UHFFFAOYSA-N
InChI
InChI=1S/C6H7NO3S/c7-5-3-1-2-4-6(5)11(8,9)10/h1-4H,7H2,(H,8,9,10)

Weigh it out

Type any one amount. The others follow from the molar mass.

Names and synonyms

13 names · show all
  • Benzenesulfonic acid, 2-amino-
  • Benzenesulfonic acid, o-amino-
  • 2-Aminobenzenesulfonic acid
  • Aniline-o-sulfonic acid
  • o-Sulfanilic acid
  • 2-Anilinesulfonic acid
  • o-Aminobenzenesulfonic acid
  • 1-Aminobenzene-2-sulfonic acid
  • o-Aminophenylsulfonic acid
  • 2-Aminophenylsulfonic acid
  • 2-Sulfoaniline
  • NSC 147
  • 2-Aminobenzene-1-sulfonic acid

Reactions

Work with Orthanilic acid

Similar compounds

Tanimoto similarity of circular fingerprints over the whole catalogue. All similar compounds

Same formula

Elsewhere