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Product Information

Product Name
4-Toluenesulfonic acid monohydrate
Brand Name
Chem Impex
Product Number
02359
CAS
6192-52-5
Certificate of Analysis (COA)​
COA not found

General Information

PubChem CID
521998
IUPAC Name
4-methylbenzenesulfonic acid;hydrate
InChI Key
KJIFKLIQANRMOU-UHFFFAOYSA-N
SMILES
CC1=CC=C(C=C1)S(=O)(=O)O.O

Application

4-Toluenesulfonic acid monohydrate is widely utilized in research focused on:

Organic Synthesis: This compound serves as an effective acid catalyst in various organic reactions, enhancing reaction rates and yields, particularly in esterifications and alkylations.

Pharmaceutical Manufacturing: It is used in the production of active pharmaceutical ingredients (APIs), where its ability to facilitate reactions under mild conditions is particularly beneficial.

Polymer Chemistry: The compound acts as a sulfonating agent in the synthesis of polymers, improving their properties such as solubility and thermal stability.

Analytical Chemistry: It is employed as a reagent in titrations and other analytical methods, providing precise measurements due to its strong acidic nature.

Surface Modification: This chemical is used to modify surfaces in materials science, enhancing adhesion properties in coatings and adhesives.

References Data Source From Pubchem

Hydrazone ligated–vanadium(V) complex: catalytic oxidative bromination of organic substrates promoted by Brønsted acid or Lewis acid

Publication Name: Discover Chemistry
Publication Date: 2026-02-26
DOI: 10.1007/s44371-026-00557-0

Alkyl Alcohol Chain-length Mediated Steric Hindrance at Support Surface in Heterogeneous α-Diimine Ni Catalysts for Modulating Ethylene Polymerization

Publication Name: Chinese Journal of Polymer Science
Publication Date: 2026-01-16
DOI: 10.1007/s10118-025-3501-9

Synthesis of discrete oligoethylenes towards chemically recyclable polyolefins

Publication Name: Nature Synthesis
Publication Date: 2026-01-02
DOI: 10.1038/s44160-025-00955-9

Simultaneous lignocellulose fractionation and direct lignin nanoparticles formation of bamboo with p-toluenesulfonic acid/hydrogen peroxide pretreatment

Publication Name: Wood Science and Technology
Publication Date: 2026-01
DOI: 10.1007/s00226-025-01739-2