p-Toluenesulfonic acid monohydrate ACS reagent, 500g

SKU:
402885-500G
  • $103.00

    • Description

    402885 Sigma-Aldrich 

    p-Toluenesulfonic acid monohydrate

    ACS reagent, ≥98.5%

    • CAS Number 6192-52-5

       

    • Linear Formula CH3C6H4SO3H · H2O 

       

    • Molecular Weight 190.22 

       

    •  Beilstein/REAXYS Number 3568023 

       

    •  EC Number 203-180-0

       

    •  MDL number MFCD00142137

    Description

    General description

    p-Toluenesulfonic acid monohydrate, an oxonium salt[3], is an inexpensive and easy to handle organic catalyst used in organic synthesis.[2] The study of its crystalline structure shows that it is monoclinic with P21/c space group.[3] Its solubility in aqueous sulfuric acid solutions has been studied.[4]

    Application

    p-Toluenesulfonic acid monohydrate (p-TsOH·H2O) may be used as a catalyst in the synthesis of the following:
    • Unsymmetrical benzils.[5]
    • Highly substituted piperidines.[2]
    • 1,3,5-Trisubstituted benzenes by trimerization of alkynes.[6]
    • Triazoloquinazolinone and benzimidazoquinazolinone derivatives.[7]
    • 1,3,5-Trisubstituted pyrazoles derivatives.[1]
    • Selenated ketene dithioacetals.[8]

    Packaging

    100, 500 g in poly bottle

    5 g in glass bottle

    Properties

    Related Categories Acids, Acids & Bases, Chemical Synthesis, Organic Acids, Synthetic Reagents More...
    grade   ACS reagent
    vapor density   5.9 (vs air)
    InChI Key   KJIFKLIQANRMOU-UHFFFAOYSA-N
    assay   ≥98.5%
    clarity of soln   passes test
    impurities   9.5-11.5% water
    ign. residue   ≤0.1%
    mp   103-106 °C (lit.)
    solubility   H2O: 10g + 50 mL, clear, colorless
    anion traces   sulfate (SO42-): ≤0.3%
    cation traces   Fe: ≤0.01%
      Na: ≤0.002%
      heavy metals (as Pb): ≤0.001%