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1,2-BENZENEDITHIOL

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1,2-BENZENEDITHIOL Basic information
1,2-BENZENEDITHIOL Chemical Properties
  • Melting point:22-24 °C(lit.)
  • Boiling point:119-120 °C17 mm Hg(lit.)
  • Density 1.236 g/mL at 25 °C(lit.)
  • refractive index 1.6565-1.6585
  • Flash point:219 °F
  • storage temp. 2-8°C
  • solubility water: slightly soluble
  • form Liquid After Melting
  • pka5.90±0.43(Predicted)
  • Specific Gravity1.236
  • color Clear light yellow
  • Water Solubility Soluble in water, benzene, ethanol, diethyl ether, ethyl acetate.
  • Sensitive Air Sensitive
  • BRN 636154
  • CAS DataBase Reference17534-15-5(CAS DataBase Reference)
Safety Information
  • Hazard Codes Xi
  • Risk Statements 36/37/38
  • Safety Statements 37/39-26
  • RIDADR 2810
  • WGK Germany 3
  • 10-13-23
  • HazardClass 9
  • PackingGroup III
  • HS Code 29309099
MSDS
1,2-BENZENEDITHIOL Usage And Synthesis
  • Chemical Propertiesclear light yellow liquid after melting
  • Synthesis Reference(s)Synthesis, p. 471, 1976 DOI: 10.1055/s-1976-24088
  • Purification MethodsLikely impurities are the oxidation products, the disulfides which could be polymeric. Dissolve it in aqueous NaOH until the solution is alkaline. Extract with Et2O and discard the extract. Acidify with cold HCl (diluted 1:1 by volume with H2O) to Congo Red paper under N2 and extract it three times with Et2O. Dry the Et2O with Na2SO4, filter, evaporate and distil the residue under reduced pressure in an atmosphere of N2. The distillate solidifies on cooling. [UV: Dewar et al. J Chem Soc 3076 1958, Grunwald & Berkowitz J Am Chem Soc 81 4939 1951, Ferretti Org Synth Coll Vol V 419 1973, Beilstein 6 IV 5651.]
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