Suppliers with verified business licenses
Sulfur dioxide (IUPAC-recommended spelling) or sulphur dioxide (traditional Commonwealth English) is the chemical compound with the formula SO2. It is a toxic gas responsible for the odor of burnt matches. It is released naturally by volcanic activity and is produced as a by-product of copper extraction and the burning of sulfur-bearing fossil fuels. It was known to alchemists as "volatile spirit of sulfur" since at least 16th century.
Sulfur dioxide is a very useful compound in winemaking, and its E code is E220. It is present even in so-called "sulfur-free" wines, at concentrations up to 10 mg per liter. It acts as an antibiotic and antioxidant, preventing wine from being damaged and oxidized by bacteria. It also helps maintain volatile acidity at desired levels. The reason why wine labels say "contains sulfites" is because of sulfur dioxide. According to US and EU laws, if the SO2 concentration of wine is less than 10 ppm, it does not need to be labeled "contains sulfites". The upper limit of SO2 concentration allowed in wine is 350ppm in the United States, while in the EU it is 160ppm for red wine and 210ppm for white wine. If the concentration of SO2 is very low, it is difficult to detect, but when the concentration is greater than 50 ppm, the smell of SO2 can be smelled with the nose and tasted with the tongue.
Using of Sulfur Dioxide
Precursor to sulfuric acid
Food preservative,Winemaking
reducing agent,fumigant,refrigerant
Biochemical and biomedical roles
reagent and solvent in the laboratory
Product Details:
CAS No.: 7446-09-5
EINECS No.: 231-195-2
UN No.: UN1079
Purity: 99.9%
Dot Class: 2.3
Appearance: Colorless Liquid
Grade Standard: Industrial Grade
| Speicifcation | Company Standard |
| SO2 | > 99.9% |
| Residue | < 0.04% |
| Moisture | < 0.06% |
| As | < 0.000004 |
Q: What's TAIYU main sales products?
A: We mainly supply specialty gases and gas equipments.
Q: What's TAIYU 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 30 days after deposit paid.
Q: Which port will you ship?
A: HongKong, QingDao , Shanghai or according to customers' demand.
Q: Can you provide Assurance Trade Order ?
A: Yes if you just purchase empty gas cylinder.
Q: Can we visit Taiyu factory ?
A: Welcome to our factory , we will serve for you best.
Chengdu Taiyu Industrial Gases Co., Ltd
Add:Room 1104, 4th Building, Stage II,Shudu Center Building, High-Tech Zone, Chengdu City, China.
Suppliers with verified business licenses
){kind=link}
){kind=link}