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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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This Item
402885T3592089866
form

crystals

form

solid

form

solid

form

solid

solubility

750 g/L

solubility

H2O: 10g + 50 mL, clear, colorless

solubility

-

solubility

-

Quality Level

200

Quality Level

300

Quality Level

200

Quality Level

100

grade

synthesis grade

grade

ACS reagent

grade

-

grade

analytical standard

pH

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

pH

-

pH

-

pH

-

mp

56 °C (Elimination of water of crystallisation)

mp

103-106 °C (lit.)

mp

103-106 °C ((lit.)), 103-106 °C (lit.)

mp

103-106 °C (lit.)


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target_organs

Respiratory system

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

pictograms

Exclamation mark

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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Questions

1–2 of 2 Questions  
  1. 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/418/501/product-dating-information-06-25-mk.pdf

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  2. 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

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