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Safety Information

05-4020

Sigma-Aldrich

Chlorosulfonic acid

CP

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Linear Formula:
ClSO3H
CAS Number:
7790-94-5
Molecular Weight:
116.52
MDL number:
MFCD00011523
UNSPSC Code:
12352100
PubChem Substance ID:
329748059

grade

CP

vapor density

4 (vs air)

vapor pressure

1 mmHg ( 25 °C)
3.3 mmHg ( 37.7 °C)

form

liquid

expl. lim.

37.7 %

availability

available only in Japan

refractive index

n20/D 1.433 (lit.)

pKa 

-6

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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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

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Regulatory Information

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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
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
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.
Guido Sonsmann et al.
Journal of the American Society for Mass Spectrometry, 13(1), 47-58 (2002-01-05)
The fragmentation of the multiply charged peptides b-chain of bovine insulin and glucagon have been investigated under low energy collision induced dissociation (CID) conditions using an electrospray ion trap mass spectrometer. The influence of charge state, specific amino acids such
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