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CAS No 88-21-1 , 2-aminobenzenesulfonic acid

  • Name: 2-aminobenzenesulfonic acid
  • Synonyms: 2-Aminobenzenesulfonic acid; Aniline-o-sulfonic acid;2-aminobenzenesulfonic acid; o-Sulfanilic acid; Aniline-2-sulfonic acid; o-Aminobenzenesulfonic acid; 88-21-1;Orthanilic acid;
  • CAS Registry Number:
  • Transport: UN 2585
  • Melting Point: 300 ºC
  • Flash Point: 0
  • Boiling Point: 363
  • Density: 1.512 g/cm3
  • Safety Statements: R34
  • Hazard Symbols: C: Corrosive;
  • Flash Point: 0
  • EINECS: 201-810-9
  • Molecular Weight: 173.18968
  • 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)
  • Risk Statements: S26;S28A
  • Molecular Formula: C6H7NO3S
  • Molecular Structure:CAS No:88-21-1 2-aminobenzenesulfonic acid

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References of 2-aminobenzenesulfonic acid
Title: Orthanilic Acid
CAS Registry Number: 88-21-1
CAS Name: 2-Aminobenzenesulfonic acid
Synonyms: o-sulfanilic acid; o-anilinesulfonic acid
Molecular Formula: C6H7NO3S
Molecular Weight: 173.19
Percent Composition: C 41.61%, H 4.07%, N 8.09%, O 27.71%, S 18.51%
Literature References: Prepn from o-nitrobenzenesulfonyl chloride: Wertheim, Org. Synth. coll. vol. II, 271 (1943).
Properties: Minute hexagonal plates, dec ~325°. Slow crystallization from water below 13.5° may yield a hemihydrate. pK (25°) 2.48. Slowly and sparingly sol in water.
pKa: pK (25°) 2.48