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    HomeProductsBasic & Fine ChemicalsFine Chemicalsp-Toluenesulfonic Acid CAS 104-15-4
    • p-Toluenesulfonic Acid CAS 104-15-4

    p-Toluenesulfonic Acid CAS 104-15-4

    p-Toluenesulfonic Acid is a highly efficient organic acid crystalline solid widely utilized as a non-oxidizing catalyst in diverse chemical syntheses. As a premium 4-toluenesulfonic acid, this chemical intermediate plays a critical role in esterification, alkylation, and cross-linking reactions for polymer production. Primarily acting as a hardener in resin systems and a catalyst in industrial organic chemistry, tosic acid ensures high reaction yields without the corrosive intensity of inorganic acids. We provide competitive factory pricing, customized specifications, and complete technical support including MSDS, TDS, COA for reliable bulk supply.

    • CAS: 104-15-4
    • Synonyms: 4-Toluenesulfonic acid, p-Methylbenzenesulfonic acid, Tosic acid, PTSA, 4-Methylbenzenesulfonic acid
    • Einecs: 203-180-0
    • Molecular Formula: C7H8O3S
    • Grade: Industrial grade 99%
    • Package: 200kg iron drum or 50kg plastic drum packing
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    Product Description

    P-toluene sulfonic acid is a non-existent Oxidizing The organic strong acid, acidic is benzoic acid 10 million times. It is a white needle-like or powder crystal, easy to deliquescence, soluble in water, pure and others Polar solvents. It will cause dehydration of paper, wood, etc carbonization。

     Alias：P-methylbenzene sulfonic acid、4-Methylbenzene sulfonic acid

    chemical formula：C7H8O3S

     molecular weight：172.202

     CAS login number：104-15-4

     EINECS login number：203-180-0

     Melting point：106 to 107 °C

     Boiling point：140 ℃（20 MM HG）

    water solubility：67 g/100 ml

    Density：1.24 g/cm³

    Appearance：White crystals

    Flash point：41 ℃

    application：Stabilizers, catalysts, curing agents, and intermediates

    Security description：S23； S26； S45 

    Danger symbol：C 

    Description of hazards：R10； R34 

    UN Dangerous Goods Number：2585 

    use

    It is used as a chemical reagent, and is also used in dyes and organic synthesis. It is widely used in the organic chemical industry. It is used as a catalyst for acrylates, textile auxiliaries, photographic films, polymerization reaction stabilizers and organic synthesis (esters); it is widely used as a curing agent in resins, coatings, wood-based panels, casting, paints and other industries, and the fixed line speed is fast and the paint film does not change color; it is also an important raw material for the synthesis of ethoxyquinoline

    FAQ - Technical & Supply Chain

    • Q:

      Is this intermediate intended for use in acid-catalyzed coating formulations?

      A: Yes, it is typically applied as a catalyst in the curing of amino resins and acid-curable coatings, where its role is to initiate cross-linking at specific temperature thresholds within industrial paint systems.
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    Acid Catalyst Aromatic Sulfonic Acid Organic Acid Sulfonic Acid

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