Product nameSulfur Dioxide SO2
Other Names:Sulfur dioxide gas
Grade Standard:Industrial Grade,Medicine Grade,Electron GradeMSDS
Sulfur dioxide（sulphur dioxide） is a colorless, pungent poisonous gas.
1.Sulfur dioxide is easy to liquefy (boiling point is -10℃),
Soluble in water (1∶40) at room temperature and pressure, 1 volume of water can dissolve about 40 volume of sulfur dioxide.
It's denser than air.
2. Sulfur dioxide（sulphur dioxide） is usually compressed into a liquid state and transported in cylinders.
|Other names :||Sulfur dioxide|
|Formula weight :||64.0638|
COA of SO2 Gas:
|Inspection item||unit||Requirement||Inspection result|
|Product appearance||/||clear and colorless||clear and colorless|
|Acidity (as HCL),≦||m/m||0.0001||<0.00001|
|Package Size：||400L Cylinder||800Ltr Cylinder|
|Cylinder Tare Weight：||280Kg||445Kg|
Precursor to sulfuric acid
Sulfur dioxide is an intermediate in the production of sulfuric acid, being converted to sulfur trioxide, and then to oleum, which is made into sulfuric acid. Sulfur dioxide for this purpose is made when sulfur combines with oxygen. The method of converting sulfur dioxide to sulfuric acid is called the contact process.
As a preservative
Sulfur dioxide is sometimes used as a preservative for dried apricots, dried figs, and other dried fruits owing to its antimicrobial properties, and it is sometimes calledE220 when used in this way. As a preservative, it maintains the colorful appearance of the fruit and prevents rotting. It is also added to sulfured molasses.