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Naphthalene-2-sulfonic acid

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Naphthalene-2-sulfonic acid Basic information
Naphthalene-2-sulfonic acid Chemical Properties
  • Melting point:124 °C
  • Boiling point:317.43°C (rough estimate)
  • Density 1.44 g/cm
  • refractive index 1.4998 (estimate)
  • solubility water: freely soluble(lit.)
  • pka0.27±0.10(Predicted)
  • Water Solubility Soluble in water.
  • Sensitive Hygroscopic
  • Merck 6377
  • CAS DataBase Reference120-18-3(CAS DataBase Reference)
  • EPA Substance Registry System2-Naphthalenesulfonic acid (120-18-3)
Safety Information
  • Hazard Codes C,F
  • Risk Statements 35-34-11
  • Safety Statements 26-36/37/39-45-16
  • RIDADR UN 2583 8/PG 2
  • WGK Germany 1
  • RTECS QK1225000
  • Hazard Note Corrosive
  • TSCA Yes
  • HazardClass 8
  • PackingGroup III
MSDS
Naphthalene-2-sulfonic acid Usage And Synthesis
  • Chemical PropertiesNondeliquescent, white plates.Soluble in water, alcohol, and ether. Combustible.
  • UsesStarting point in the manufacture of β-naphthol, β-naphtholsulfonic acid, β-naphthylaminesulfonic acid, etc.
  • DefinitionChEBI: A naphthalenesulfonic acid in which the sulfo group is linked to position 2 of the naphthalene ring.
  • Purification MethodsCrystallise the acid from conc HCl. The S-benzylisothiuronium salt has m 192o (from aqueous EtOH). [Berger Acta Chem Scand 8 432 1954, Beilstein 11 H 171, 11 IV 527.]
Naphthalene-2-sulfonic acid Preparation Products And Raw materials
Naphthalene-2-sulfonic acid (120-18-3)Related Product Information
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