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89760

p-Toluenesulfonic acid monohydrate

puriss., for acetyl determination, ≥98.5% (T)

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About This Item

Linear Formula:
CH3C6H4SO3H · H2O
CAS Number:
6192-52-5
Molecular Weight:
190.22
EC Number:
203-180-0
UNSPSC Code:
12352100
PubChem Substance ID:
329769531
Beilstein/REAXYS Number:
3568023
MDL number:
MFCD00142137
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vapor density

5.9 (vs air)

grade

puriss.

assay

≥98.5% (T)

impurities

≤0.5% H2SO4, 9-11% water

mp

102-105 °C, 103-106 °C (lit.)

solubility

H2O: 0.1 g/mL, clear

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

Lit.; For a mild hydrolysis of proteins with subsequent quantitative estimation of tryptophan
This product has been replaced by T35920-Sigma-Aldrich | p-Toluenesulfonic acid monohydrate, ReagentPlus®, 98.5% | CH3C6H4SO3H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

pictograms

CorrosionExclamation mark
GHS05,GHS07

target_organs

Respiratory system

Storage Class

8A - Combustible corrosive hazardous materials

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Faceshields, Gloves

signalword

Danger

Hazard Classifications

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

Regulatory Information

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Certificates of Analysis (COA)

Lot/Batch Number
MKBJ5669V

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F. Pregl et al.
Quant. organ. Mikroanalyse, 239-239 (1958)
Hydrolysis of proteins with p-toluenesulfonic acid. Determination of tryptophan.
T Y Liu et al.
The Journal of biological chemistry, 246(9), 2842-2848 (1971-05-10)
Solvent-Free Reductive Amination: An Organic Chemistry Experiment.
Goldstein SW and Cross AV.
Journal of Chemical Education (2015)
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)
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
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