Skip to Content
Merck
CN
All Photos(1)

Key Documents

View All Documentation

Safety Information

89762

Sigma-Aldrich

p-Toluenesulfonic acid monohydrate

≥98.0% (T), ≥98.0% (HPLC)

Sign Into View Organizational & Contract Pricing
All Photos(1)

About This Item

Linear Formula:
CH3C6H4SO3H · H2O
CAS Number:
6192-52-5
Molecular Weight:
190.22
Beilstein:
3568023
MDL number:
MFCD00142137
UNSPSC Code:
12352100
PubChem Substance ID:
329769532

vapor density

5.9 (vs air)

Assay

≥98.0% (HPLC)
≥98.0% (T)

form

solid

impurities

8-12% water

mp

100-104 °C
103-106 °C (lit.)

solubility

H2O: 1 g/10 mL, clear, colorless

SMILES string

[H]O[H].Cc1ccc(cc1)S(O)(=O)=O

InChI

1S/C7H8O3S.H2O/c1-6-2-4-7(5-3-6)11(8,9)10;/h2-5H,1H3,(H,8,9,10);1H2

InChI key

KJIFKLIQANRMOU-UHFFFAOYSA-N

Looking for similar products? Visit Product Comparison Guide

Pictograms

CorrosionExclamation mark
GHS05,GHS07

Signal Word

Warning

Hazard Statements

H290,H315,H319,H335

Hazard Classifications

Eye Irrit. 2 - Met. Corr. 1 - Skin Irrit. 2 - STOT SE 3

Target Organs

Respiratory system

Storage Class Code

8A - Combustible corrosive hazardous materials

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Information

危险化学品

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number

It looks like we've run into a problem, but you can still download Certificates of Analysis from our Documents section.

If you need assistance, please contact Customer Support.

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Solvent-Free Reductive Amination: An Organic Chemistry Experiment.
Goldstein SW and Cross AV.
Journal of Chemical Education (2015)
Makoto Ueno et al.
The Journal of organic chemistry, 68(16), 6424-6426 (2003-08-05)
alpha-Tosyloxyketones and alpha-tosyloxyaldehydes were directly prepared from alcohols by treatment with iodosylbenzene and p-toluenesulfonic acid monohydrate in good yields. This method can be used for the direct preparation of thiazoles, imidazoles, and imidazo[1,2-a]pyridines from alcohols in good to moderate yields
Detailed characterization of p-toluenesulfonic acid monohydrate as a convenient, recoverable, safe, and selective catalyst for alkylation of the aromatic nucleus.
Mahindaratne MPD and Wimalasena K.
The Journal of Organic Chemistry, 63(9), 2858-2866 (1998)
The crystal and molecular structure of 4-methyl sulfonic acid (p-toluenesulfonic acid) monohydrate, C7H8SO3-. H3O+, an oxonium salt.
Arora SK and Sundaralingam M.
Acta Crystallographica Section B, Structural Science, 27(7), 1293-1298 (1971)
Abdullah S Al-Bogami et al.
Ultrasonics sonochemistry, 20(5), 1194-1202 (2013-04-18)
The present paper deal with the multi-component condensation of 8-hydroxy quinoline, aromatic aldehydes, and sulfone derivatives catalyzed by p-toluenesulfonic acid for the synthesis of a series of 4H-pyrano[3,2-h]quinoline derivatives in ethanol under ultrasonic irradiations. We provide a series of quinoline
View All Related Papers

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service