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Merck
CN

8.14725

Toluene-4-sulfonic acid monohydrate

for synthesis

Synonym(s):

Toluene-4-sulfonic acid monohydrate, p-Toluenesulfonic acid, Tosylic acid, Tosic acid, PTSA

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About This Item

Empirical Formula (Hill Notation):
C7H8O3S · xH2O
CAS Number:
Molecular Weight:
172.20 (anhydrous basis)
UNSPSC Code:
12352106
EC Index Number:
203-180-0
NACRES:
NA.22
MDL number:
Grade:
synthesis grade
Form:
crystals
Solubility:
750 g/L
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grade

synthesis grade

Quality Segment

form

crystals

autoignition temp.

600 °C

potency

2570 mg/kg LD50, oral (Rat)

pH

1 (20 °C, 650 g/L in H2O, anhydrous substance)

bp

140 °C/27 hPa

mp

56 °C (Elimination of water of crystallisation)

transition temp

flash point 180 °C

solubility

750 g/L

bulk density

510 kg/m3

storage temp.

2-30°C

SMILES string

[S](=O)(=O)([O-])c1ccc(cc1)C.[O+H3]

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

Application

  • Synthesis and characterization of toluene sulfonic acid (tsa) doped polypyrrole nanoparticles: Effect of dopant concentrations: This study investigates the effect of various concentrations of para-toluene sulfonic acid on the properties of polypyrrole nanoparticles, providing insights into the optimization of conductive polymers for applications in electronic devices and sensors (Alva et al., 2016).

Analysis Note

Assay (acidimetric, calc. on anhydrous substance): ≥ 98.0 %
Water (K. F.): 8.0 - 12.0 %
Identity (IR): passes test


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pictograms

Exclamation mark

target_organs

Respiratory system

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

signalword

Warning

Hazard Classifications

Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

Storage Class

8A - Combustible corrosive hazardous materials



Certificates of Analysis (COA)

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Global Trade Item Number

SKUGTIN
814725902504027269983376
814725500004022536929125
814725010004022536422671
814725100004022536422688