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26388

Sigma-Aldrich

Chlorosulfonic acid

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About This Item

Linear Formula:
ClSO3H
CAS Number:
7790-94-5
Molecular Weight:
116.52
EC Number:
232-234-6
MDL number:
MFCD00011523
UNSPSC Code:
12352100
PubChem Substance ID:
329752858

vapor density

4 (vs air)

vapor pressure

1 mmHg ( 25 °C)
3.3 mmHg ( 37.7 °C)

expl. lim.

37.7 %

refractive index

n20/D 1.433 (lit.)

bp

151-152 °C/755 mmHg (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

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Caution

may contain particles and discolor to slightly greenish-yellow on storage

Pictograms

Skull and crossbonesCorrosion
GHS06,GHS05

Signal Word

Danger

Hazard Statements

H314,H330,H335

Hazard Classifications

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

Target Organs

Respiratory system

Supplementary Hazards

EUH014

Storage Class Code

6.1A - Combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Information

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José Barluenga et al.
Journal of the American Chemical Society, 131(11), 4031-4041 (2009-02-28)
A detailed study of the scope of a new Pd-catalyzed synthesis of indoles from 1,2-dihaloarenes and o-halobenzene sulfonates and imines is described. The cascade reaction comprises an imine alpha-arylation followed by an intramolecular C-N bond-forming reaction promoted by the same
Yongzhen Tao et al.
Carbohydrate research, 341(13), 2261-2269 (2006-06-30)
A water-soluble hyperbranched beta-glucan, coded as TM3b, extracted from sclerotia of an edible fungus (Pleurotus tuber-regium) was fractioned into eight fractions coded as F1-F8 by a nonsolvent addition method. Five fractions were treated with chlorosulfonic acid at 35 degrees C
P Taddei et al.
Biomacromolecules, 8(4), 1200-1208 (2007-03-07)
Silk fabrics were treated with chlorosulphonic acid in pyridine for different times. The amount of sulfur bound to silk increased during the first 2 h of reaction and then reached a plateau. The amino acidic pattern of sulfated silk remained
Yasushi Tamada
Biomaterials, 25(3), 377-383 (2003-10-31)
Silk fibroin (Bombyx mori) was sulfated using chlorosulfonic acid in pyridine. FT-IR spectra showed introduction of sulfate group by this reaction; NMR spectra indicated that sulfation occurred mainly at tyrosine and serine residues. Molecular size decreased and dispersed with sulfation.
Mei Zhang et al.
Carbohydrate research, 338(24), 2863-2870 (2003-12-12)
Six water-insoluble (1-->3)-beta-D-glucan fractions TM8-1 to TM8-6 with weight-average molecular mass Mw ranging from 5.76 to 77.4x10(4) obtained from the sclerotia of Pleurotus tuber-regium were sulfated to produce the water-soluble fractions S-TM8-1 to S-TM8-6 with Mw from 6.0 to 64.8x10(4).
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