Skip to Content
Merck
CN

27815

p-Toluenesulfonic acid monohydrate

≥99% (calc. to H2O free subst.)

Synonym(s):

4-Methylbenzenesulfonic acid monohydrate, 4-Toluenesulfonic acid monohydrate, PTSA monohydrate, TsOH monohydrate

Sign In to View Organizational & Contract Pricing.

Select a Size

About This Item

Linear Formula:
CH3C6H5SO3H · H2O
CAS Number:
6192-52-5
Molecular Weight:
190.22
EC Number:
203-180-0
UNSPSC Code:
12352106
NACRES:
NA.22
PubChem Substance ID:
57648235
MDL number:
MFCD00142137
Colour Index Number:
42655
Beilstein/REAXYS Number:
3568023
Assay:
≥99% (calc. to H2O free subst.)
Form:
solid

Key Documents

View All Documentation
Technical Service
Need help? Our team of experienced scientists is here for you.
Let Us Assist
Technical Service
Need help? Our team of experienced scientists is here for you.
Let Us Assist

InChI key

KJIFKLIQANRMOU-UHFFFAOYSA-N

InChI

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

SMILES string

O.Cc1ccc(cc1)S(O)(=O)=O

assay

≥99% (calc. to H2O free subst.)

form

solid

impurities

≥85% toluene-4-solfonic acid, 8-12% water (Karl Fischer)

ign. residue

≤0.5%

Quality Level

200

Looking for similar products? Visit Product Comparison Guide

Related Categories

General description

p-Toluenesulfonic acid monohydrate, an oxonium salt, is an inexpensive and easy-to-handle organic catalyst used in organic synthesis.

Application

p-Toluenesulfonic acid monohydrate is a catalyst in esterification, reductive amination, Biginelli reaction, and intermolecular coupling of the aromatic nucleus. It is also used in the preparation of various bioactive compounds via multicomponent condensation reactions.

pictograms

CorrosionExclamation mark
GHS05,GHS07

signalword

Danger

hcodes

H314,H335

Hazard Classifications

Eye Dam. 1 - Skin Corr. 1C - STOT SE 3

target_organs

Respiratory system

Storage Class

8A - Combustible corrosive hazardous materials

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

Regulatory Information

危险化学品
This item has

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number
SDBB4783
STBK7702
STBK3427
STBK3426
STBJ8961

Don't see the Right Version?

If you require a particular version, you can look up a specific certificate by the Lot or Batch number.

Search for a COA

Already Own This Product?

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

Visit the Document Library

Juan Mauricio Garré et al.
Nature communications, 11(1), 1784-1784 (2020-04-15)
Dysregulated immunity has been implicated in the pathogenesis of neurodevelopmental disorders but its contribution to synaptic and behavioral deficits in Rett syndrome (RTT) remains unknown. P2X7 receptors (P2X7Rs) are unique purinergic receptors with pro-inflammatory functions. Here, we report in a
Ashleigh Willis et al.
Journal of neuroscience methods, 308, 1-5 (2018-07-24)
Primary neuronal cultures underpin diverse neuroscience experiments, including various protein analysis techniques, such as Western blotting, whereby protein extraction from cultured neurons is required. During immunoblotting experiments, we encountered problems due to a highly-abundant protein of 65-70 KDa present in
P P Akalin et al.
Polish journal of veterinary sciences, 22(2), 271-278 (2019-07-04)
This study aimed to determine the levels of milk cell total protein (TP), reduced nicotinamide adenine dinucleotide phosphate (NADPH), total glutathione (tGSH), activities of glucose-6-phosphate dehydrogenase (G6PD) and glutathione peroxidase (GPx) in subclinical mastitic cows. Milk from each udder was
Ayman M Atta et al.
Molecules (Basel, Switzerland), 20(6), 11131-11153 (2015-06-20)
This work examines the use of new hydrophobic ionic liquid derivatives, namely octadecylammonium tosylate (ODA-TS) and oleylammonium tosylate (OA-TS) for corrosion protection of steel in 1 M hydrochloric acid solution. Their chemical structures were determined from NMR analyses. The surface
Yi-Ling Hsieh et al.
Pharmaceutical research, 32(9), 3110-3118 (2015-04-16)
The aim of this study was to investigate how the disproportionation process can be impacted by the properties of the salt, specifically pHmax. Five miconazole salts and four sertraline salts were selected for this study. The extent of conversion was
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