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84694 Sigma-Aldrich

Sulfur dioxide

puriss., ≥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
grade   puriss.
assay   ≥99.9%
impurities   ≤0.01% H2SO4
bp   −10 °C(lit.)
mp   −73 °C(lit.)
density   1.25 g/mL at 25 °C(lit.)

Description

Other Notes

Sales restrictions may apply

Packaging

Cylinder with net ~6 kg

General description

Sulfur dioxide is an important air pollutant. Sulfur dioxide in atmosphere can be removed by scrubbing through 0.1M sodium disulfitomercurate (II). Sulfur dioxide is added during wine production to prevent the undesirable microbial growth and oxidation processes. Rate of oxidation of aqueous sulfur dioxide species to sulfate and bisulfate by aqueous hydrogen peroxide over the pH range 0-3 has been evaluated. A novel electrochemical sensor for the detection of sulfur dioxide in both gas and solution has been described.

Price and Availability

Safety & Documentation

Safety Information

Symbol 
Signal word 
Danger
Hazard statements 
RIDADR 
UN1079 - class 2 - Sulfur dioxide
WGK Germany 
1
RTECS 
WS4550000
Protocols & Articles
Peer-Reviewed Papers
15

References

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