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Merck
CN

186309

Chlorosulfonic acid

99%

Synonym(s):

Sulfuric chlorohydrin

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About This Item

Linear Formula:
ClSO3H
CAS Number:
7790-94-5
Molecular Weight:
116.52
UNSPSC Code:
12352100
PubChem Substance ID:
329751725
EC Number:
232-234-6
MDL number:
MFCD00011523

Key Documents

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InChI key

XTHPWXDJESJLNJ-UHFFFAOYSA-N

InChI

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

SMILES string

OS(Cl)(=O)=O

vapor density

4 (vs air)

vapor pressure

1 mmHg ( 25 °C), 3.3 mmHg ( 37.7 °C)

assay

99%

form

liquid

expl. lim.

37.7 %

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.)

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Legal Information

DuPont product

pictograms

Skull and crossbonesCorrosion
GHS06,GHS05

signalword

Danger

Hazard Classifications

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

target_organs

Respiratory system

supp_hazards

EUH014

Storage Class

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

ppe

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

Regulatory Information

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Certificates of Analysis (COA)

Lot/Batch Number
STBC7490V
STBB4203
S82301
S37739
00908EP

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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
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
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
Preeyanat Vongchan et al.
Carbohydrate research, 337(13), 1239-1242 (2002-07-12)
Chitin prepared from the shells of rice-field crabs (Somanniathelphusa dugasti) was converted into chitosan with a degree of acetylation of 0.21 and then sulfated with chlorosulfonic acid in N,N-dimethylformamide under semi-heterogeneous conditions to give 87% of water-soluble sulfated chitosan with
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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