Sulfur dioxide gas (SO2) is a toxic gas with a pungent, irritating smell that is released by volcanoes and in various industrial processes.
Product Description
| Model |
Sulfur dioxide |
| Molecular Formula |
SO2 |
| Filling rate |
1.25 |
| UN No. |
UN1079 |
| CAS No. |
7446-09-5 |
| EINECS No. |
231-195-2 |
| Hazardous class for transport |
2.3 |
| Transportation Label |
Nonflammable Gas |
SO2 gas purity we provide:
| Item |
Standard(GB/T3637-2021) |
| SO2 (%) |
≥99.9%min |
| Residue |
≤0.04 |
| H2O |
≤0.06 |
| As |
≤0.000004 |
Why can we guarantee the quality of our products:
The cylinder passed the inspection of the state department.
The filling weight is sufficient.We have filling report for every cylinder.This report will be sent to the customer together with the gas test report.
We have precision testing equipment,and promised every cylinder and gas will be test before the delivery.
Application
1.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.
2.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.
3.In winemaking
Sulfur dioxide is an important compound in winemaking, and is designated as parts per million in wine.
Sulfur dioxide exists in wine in free and bound forms, and the combinations are referred to as total SO2.
4.As a refrigerant:
Being easily condensed and possessing a high heat of evaporation, sulfur dioxide is a candidate material for refrigerants.
FAQ
Q: What's DIJIA main sales products?
A: We mainly supply specialty gases and gas equipments.
Q:What's DIJIA order MOQ?
A: We advice our customer one container at least , anyway we prefer our clients demand.
Q:How long is the delivery time?
A:Normally 20 days after deposit paid.
Q:Which port will you ship?
A: Shanghai, QingDao ,also can according to customers' demand.
Q:Can you provide Assurance Trade Order ?
A: Yes if you just purchase empty gas cylinder.
Q:Can we visit Dijia factory ?
A: Welcome to our factory , we will serve for you best.
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