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571024

Chlorosulfonic acid

99%

Sinónimos:

Sulfuric chlorohydrin

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Fórmula lineal:
ClSO3H
Número CAS:
Peso molecular:
116.52
NACRES:
NA.21
PubChem Substance ID:
UNSPSC Code:
12352100
EC Number:
232-234-6
MDL number:
Assay:
99%
Concentration:
99%
Form:
liquid
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vapor density

4 (vs air)

Quality Segment

vapor pressure

1 mmHg ( 25 °C), 3.3 mmHg ( 37.7 °C)

assay

99%

form

liquid

expl. lim.

37.7 %

concentration

99%

refractive index

n20/D 1.433 (lit.)

pH

< 1 (at 20 °C)

bp

151-152 °C/755 mmHg (lit.)

solubility

acetic acid: soluble(lit.), chloroform: soluble(lit.), dichloromethane: soluble(lit.)

density

1.753 g/mL at 25 °C (lit.)

SMILES string

OS(Cl)(=O)=O

InChI

1S/ClHO3S/c1-5(2,3)4/h(H,2,3,4)

InChI key

XTHPWXDJESJLNJ-UHFFFAOYSA-N

General description

Chlorosulfonic acid is a strong acid that is synthesized on an industrial scale by reacting sulfur trioxide and dry hydrogen chloride gas in an equimolar ratio. It can act as a sulfonating, dehydrating, oxidizing and chlorinating agent. It is reported to be a better electrophilic olefin cyclization agent in comparison to other sulfonic acids. Its infrared spectra in the solid, liquid and gaseous state have been recorded in the region 4000-400cm-1.

Application

Chlorosulfonic acid may be used in the following processes:
  • Synthesis of di-n-butyl ammonium chlorosulfonate, a secondary amine ionic liquid.
  • To prepare sulfonated polyethersulfone (SPES) with enhanced hydrophilic property.
  • To attach sulfate group to silk fibroin for improving its anticoagulant ability.[1]
  • As a catalyst to prepare substituted coumarin, via von Pechmann condensation between phenol and β-ketoester.
  • As a substitute to acid catalyst in Biginelli reaction to prepare 3,4dihydropyrimidines.

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Este artículo
8.002208.45127163511
concentration

99%

concentration

-

concentration

-

concentration

-

assay

99%

assay

≥97% (acidimetric)

assay

≥98% (acidimetric)

assay

-

Quality Level

200

Quality Level

200

Quality Level

-

Quality Level

100

form

liquid

form

liquid

form

liquid

form

powder

solubility

acetic acid: soluble(lit.), dichloromethane: soluble(lit.), chloroform: soluble(lit.)

solubility

-

solubility

-

solubility

alcohol: slightly soluble(lit.), benzene: slightly soluble(lit.), chloroform: slightly soluble(lit.), diethyl ether: slightly soluble(lit.), water: freely soluble(lit.)

pH

< 1 (at 20 °C)

pH

<1 (20 °C in H2O, Aqueous solution; rigorous decomposition)

pH

<1 (20 °C in H2O, Aqueous solution; rigorous decomposition)

pH

-


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pictograms

Skull and crossbonesCorrosion

signalword

Danger

Hazard Classifications

Acute Tox. 1 Inhalation - Eye Dam. 1 - Skin Corr. 1A - STOT SE 3

target_organs

Respiratory system

supp_hazards

Clase de almacenamiento

6.1B - Non-combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter



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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

      Helpful?

  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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