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p-Toluenesulfonic acid monohydrate

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p-Toluenesulfonic acid monohydrate Basic information
p-Toluenesulfonic acid monohydrate Chemical Properties
  • Melting point:96-99 °C(lit.)
  • Boiling point:140°C 20mm
  • Density 1,24 g/cm3
  • vapor density 5.9 (vs air)
  • refractive index 1,382-1,384
  • Flash point:180 °C
  • storage temp. Store at RT.
  • solubility H2O: 0.1 g/mL, clear
  • form Solid
  • Colour Index  42655
  • color White to pink
  • PH1 (650g/l, H2O, 20℃)(anhydrous substance)
  • Water Solubility soluble
  • Sensitive Hygroscopic
  • Merck 14,9533
  • BRN 3568023
  • Stability:Stable. Incompatible with strong oxidizing agents, strong bases, most common metals. Protect from moisture.
  • InChIKeyKJIFKLIQANRMOU-UHFFFAOYSA-N
  • CAS DataBase Reference6192-52-5(CAS DataBase Reference)
  • EPA Substance Registry SystemBenzenesulfonic acid, 4-methyl-, monohydrate (6192-52-5)
Safety Information
  • Hazard Codes Xi,C
  • Risk Statements 36/37/38-34-37
  • Safety Statements 26-37-45-36/37/39
  • RIDADR UN 2585 8/PG 3
  • WGK Germany -
  • RTECS XT6300000
  • 3
  • Autoignition Temperature600 °C
  • TSCA Yes
  • HazardClass 8
  • PackingGroup III
  • HS Code 29041000
  • ToxicityLD50 orally in Rabbit: 2570 mg/kg
MSDS
p-Toluenesulfonic acid monohydrate Usage And Synthesis
  • Chemical PropertiesWhite crystals
  • UsesDerivitizing agent.
  • Purification MethodsPurify the acid by precipitation from a saturated solution at 0o by introducing HCl gas. It can also be crystallised from conc HCl, then crystallised from dilute HCl (charcoal) to remove benzenesulfonic acid. It has been crystallised from EtOH/water. Dry it in a vacuum desiccator over solid KOH and CaCl2. p-Toluenesulfonic acid can be dehydrated by azeotropic distillation with *benzene or by heating at 100o for 4hours under water-pump vacuum. The anhydrous acid can be crystallised from *benzene, CHCl3, ethyl acetate, anhydrous MeOH, or from acetone by adding a large excess of *benzene. It can also be dried under vacuum at 50o. The S-benzylisothiuronium salt has m 182o (from aqueous EtOH). [Beilstein 11 IV 241.]
p-Toluenesulfonic acid monohydrate Preparation Products And Raw materials
p-Toluenesulfonic acid monohydrate(6192-52-5)Related Product Information
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