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295698 Sigma-Aldrich

Sulfur dioxide

≥99.9%

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Properties

Related Categories Chemical Synthesis, Specialty Gases, Synthetic Reagents More...
vapor density   2.26 (21 °C, vs air)
vapor pressure   1779 mmHg ( 21 °C)
InChI Key   RAHZWNYVWXNFOC-UHFFFAOYSA-N
assay   ≥99.9%
bp   −10 °C(lit.)
mp   −73 °C (lit.)
density   1.25 g/mL at 25 °C (lit.)

Description

Application

Sulfur dioxide is primarily used as a feedstock for the production of sulfuric acid (contact process). It is generally used in the synthesis of a variety of sulfur-containing organic compounds like alkyl/aryl sulfonyl chlorides, sulfinates, sultines, and polysulfone. Additionally, SO2 also possess antimicrobial properties and are used as preservatives.

Packaging

454 g in steel cylinder

Recommended products

Z148504/Z148512 CGA 180 Regulators OR Z146951 CGA 110 valve with Z147095 CGA 110 to CGA 180 adapter and Z146986 washer for valve, OR Z1451661 CGA 180 purge valve. Also recommended Z562610 CGA 180 Lecture Bottle Station.

Safety & Documentation

Safety Information

Symbol 
Signal word 
Danger
Hazard statements 
RIDADR 
UN1079 - class 2 - Sulfur dioxide
WGK Germany 
1
RTECS 
WS4550000

Documents

Certificate of Analysis

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Certificate of Origin

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Protocols & Articles

Articles

GC Analysis of Volatiles in White Wine on VOCOL® after SPME using a 75 μm Carboxen/PDMS Fiber

From our library of Articles, Sigma-Aldrich presents GC Analysis of Volatiles in White Wine on VOCOL® after SPME using a 75 μm Carboxen/PDMS Fiber
Keywords: Chromatography, Gas chromatography, Gas chromatography mass spectrometry, Mass spectrometry, Purification, Solid phase microextractions

GC Analysis of a 7-Component Sulfur Gases Mix on Supel-Q™ PLOT after SPME using 75 μm Carboxen/PDMS Fiber

From our library of Articles, Sigma-Aldrich presents GC Analysis of a 7-Component Sulfur Gases Mix on Supel-Q™ PLOT after SPME using 75 μm Carboxen/PDMS Fiber
Keywords: Chromatography, Flame photometric detector, Gas chromatography, Purification, Solid phase microextractions

Peer-Reviewed Papers
15

References

Related Products

control valve

Product #

Description

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Z146951 Lecture-bottle control valve, stainless steel, hose outlet I.D. 1/4  in.

purge valve

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Z151661 "T"-purge valve, CGA Inlet size 180

recommended

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Description

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Z562610 Aldrich® lecture-bottle station, for mildly corrosive gases

regulator

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Z148504 Aldrich® corrosive lecture-bottle gas regulator, 1-15 psig delivery pressure, CGA Inlet size 180
Z148512 Aldrich® corrosive lecture-bottle gas regulator, 1-50 psig delivery pressure, CGA Inlet size 180

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901592 Sulfur dioxide solution, 0.5 M in THF
901599 Carbon disulfide solution, 5 M in ethanol

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