Skip to Content
MilliporeSigma
All Photos(4)

Key Documents

View All Documentation

T35920

Sigma-Aldrich

p-Toluenesulfonic acid monohydrate

ReagentPlus®, ≥98%

Synonym(s):

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

Sign Into View Organizational & Contract Pricing

Select a Size

5 G
$26.40
100 G
$39.80
500 G
$89.70
3 KG
$181.00
15 KG
$570.00

$26.40

In StockDetails

Request a Bulk Order
All Photos(4)

Select a Size

Change View
5 G
$26.40
100 G
$39.80
500 G
$89.70
3 KG
$181.00
15 KG
$570.00

About This Item

Linear Formula:
CH3C6H4SO3H · H2O
CAS Number:
6192-52-5
Molecular Weight:
190.22
Beilstein/REAXYS Number:
3568023
EC Number:
203-180-0
MDL number:
MFCD00142137
UNSPSC Code:
12352100
PubChem Substance ID:
57654665
NACRES:
NA.21

$26.40

In StockDetails

Request a Bulk Order

grade

reagent

Quality Level

200

vapor density

5.9 (vs air)
5.9 (vs air)

product line

ReagentPlus®

assay

≥98%

form

solid

mp

103-106 °C ((lit.))
103-106 °C (lit.)

functional group

tosylate

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]
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]
KJIFKLIQANRMOU-UHFFFAOYSA-N

Looking for similar products? Visit Product Comparison Guide

Related Categories

Application

p-toluenesulfonic acid monohydrate may be used as a better alternative to Friedel-Crafts catalysts for the alkylation of the aromatic nucleus with activated alkyl halides, alkenes, or tosylates under mild conditions.[1]

Legal Information

ReagentPlus is a registered trademark of Merck KGaA, Darmstadt, Germany

pictograms

CorrosionExclamation mark
GHS05,GHS07

signalword

Danger

Hazard Classifications

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

target_organs

Respiratory system

Storage Class

8A - Combustible corrosive hazardous materials

wgk_germany

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number
BCCM9497
BCCM7190
BCCM7189
BCCM3634
BCCM0236

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

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)
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
Chika Taniguchi et al.
International journal of pharmaceutics, 434(1-2), 148-154 (2012-05-31)
This study was undertaken to develop new dipyridamole (DP) formulations with acidic microenvironmental pH-modifiers for improving dissolution and absorption under hypochlorhydric conditions. Dipyridamole granules (DPG) with ten acidic pH-modifiers were prepared with conventional wet granulation, and their manufacturability, stability and
Ljupčo Pejov et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 79(1), 27-34 (2011-03-23)
The 1:1 p-toluenesulfonic acid-water complex, p-toluenesulfonic acid itself and the p-toluenesulfonate anion were studied at HF and B3LYP/6-31+G(d,p) levels of theory. Full geometry optimizations of the aforementioned species reveal non-existence of ionic minima on the explored 1:1 p-toluenesulfonic acid-water complex
Francis Gosselin et al.
The Journal of organic chemistry, 75(12), 4154-4160 (2010-05-22)
Practical, chromatography-free syntheses of 5-lipoxygenase inhibitor MK-0633 p-toluenesulfonate (1) are described. The first route used an asymmetric zincate addition to ethyl 2,2,2-trifluoropyruvate followed by 1,3,4-oxadiazole formation and reductive amination as key steps. An improved second route features an inexpensive diastereomeric
View All Related Papers

Questions

1–2 of 2 Questions  

  1. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

      Helpful?

  2. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

      Helpful?

Reviews

No rating value

Active Filters

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