161993
p-Toluenesulfonic acid monohydrate
reagent grade, 98%
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About This Item
Linear Formula:
CH3C6H4SO3H · H2O
CAS Number:
Molecular Weight:
190.22
Beilstein/REAXYS Number:
3568023
EC Number:
MDL number:
UNSPSC Code:
12352100
PubChem Substance ID:
Recommended Products
grade
reagent grade
vapor density
5.9 (vs air)
assay
98%
mp
103-106 °C (lit.)
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
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Other Notes
This product has been replaced by T35920-Sigma-Aldrich | p-Toluenesulfonic acid monohydrate, ReagentPlus®, 98.5% | CH3C6H4SO3H
Legal Information
ReagentPlus is a registered trademark of Merck KGaA, Darmstadt, Germany
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Warning
hcodes
Hazard Classifications
Eye Irrit. 2 - Met. Corr. 1 - Skin Irrit. 2 - STOT SE 3
target_organs
Respiratory system
Storage Class
8A - Combustible corrosive hazardous materials
wgk_germany
WGK 1
ppe
dust mask type N95 (US), Eyeshields, Faceshields, Gloves
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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)
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)
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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
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