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84692

Sigma-Aldrich

Sulfur dioxide

≥99.9%

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About This Item

Linear Formula:
SO2
CAS Number:
7446-09-5
Molecular Weight:
64.06
Beilstein:
3535237
EC Number:
231-195-2
MDL number:
MFCD00011450
UNSPSC Code:
12142100
PubChem Substance ID:
329769308
NACRES:
NA.22

vapor density

2.26 (21 °C, vs air)

vapor pressure

1779 mmHg ( 21 °C)

Assay

≥99.9%

form

gas

impurities

≤0.02% water
≤0.05% H2SO4

bp

−10 °C (lit.)

mp

−73 °C (lit.)

density

1.25 g/mL at 25 °C (lit.)

SMILES string

O=S=O

InChI

1S/O2S/c1-3-2

InChI key

RAHZWNYVWXNFOC-UHFFFAOYSA-N

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Packaging

Cylinder with net 2.4kg

Other Notes

Sales restrictions may apply

Recommended products

Recommended DIN 477 - Nr. 7

Signal Word

Danger

Hazard Statements

H280,H314,H331

Hazard Classifications

Acute Tox. 3 Inhalation - Eye Dam. 1 - Press. Gas Liquefied gas - Skin Corr. 1B

Storage Class Code

2A - Gases

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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Certificates of Analysis (COA)

Lot/Batch Number
STBH9119

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Yuan-Qiang Sun et al.
Chemical communications (Cambridge, England), 49(26), 2637-2639 (2013-02-26)
A coumarin-hemicyanine dye was reported for ratiometric fluorescent detection of SO2 derivatives HSO3(-) and SO3(2-) based on a novel addition-rearrangement cascade reaction.
Eliza Harris et al.
Science (New York, N.Y.), 340(6133), 727-730 (2013-05-11)
Global sulfate production plays a key role in aerosol radiative forcing; more than half of this production occurs in clouds. We found that sulfur dioxide oxidation catalyzed by natural transition metal ions is the dominant in-cloud oxidation pathway. The pathway
Xin-Bao Wang et al.
Life sciences, 98(2), 63-67 (2014-01-15)
Sulfur dioxide (SO2) is a common air pollutant and is detrimental to many organs. Its toxic effects including oxidative damage, deoxyribonucleic acid (DNA) damage and inflammation have been extensively studied. However, recent studies showed that SO2 can be generated endogenously
Xin-Bao Wang et al.
European journal of pharmacology, 670(1), 1-6 (2011-09-20)
Sulfur dioxide is considered a toxic gas in air pollution and detrimental to many organs, however, it can be generated endogenously in the cardiovascular system in vivo. Gaseous sulfur dioxide has an endothelium-dependent vasorelaxing effect at low concentrations, but is
Philippe Bisseret et al.
Organic & biomolecular chemistry, 11(33), 5393-5398 (2013-07-16)
Although sulfur dioxide (SO2) has been used as a reagent for organic chemistry for more than one hundred years, being endowed with quite a distinct and varied reactivity profile, which allows the synthesis of a large range of compounds, its
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