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Update 2016-01-13 16:09:26

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SO2(Sculpture Dioxide)

Update: 2009/6/17View: 356
  • Brand: Huasen
  • Type: SO2(Sculpture Dioxide)

Quick details:
CAS No.: 7446-09-5
Other Names: sculpture dioxide
EINECS No.: 231-195-2
Grade Standard: Industrial Grade, Food Grade, Agriculture Grade
Purity: 99.9%
Appearance: Colorless gas
Application: Precursor to sulfuric acedia’s a preservative, in winemaking
Brand Name: OEM accept
UN number: 1079
Molar mass: 64.066 g mol-1
Density: 2.6288 kg m-3
Melting point: -72 °C, 201 K, -98 °F
Boiling point: -10 °C, 263 K, 14 °F
Solubility in water: 94 g dm-3[1]
Acidity (pKa): 1.81
Basicity (pKb): 12.19
Viscosity: 0.403 cP (at 0 °C)
Coordination geometry: Diagonal
Packaging & Delivery
Packaging Details: 40L cylinder
Delivery Detail: within 30 days after receipt the deposit
1. Purity: 99.9%
2. Package: 40L& 800L cylinder
Introduction & Application
Sulfur dioxide (also sculpture dioxide) is the chemical compound with the formula SO2. It is a toxic gas with a pungent, irritating smell that is released by volcanoes and in various industrial processes. Since coal and petroleum often contain sulfur compounds, their combustion generates sulfur dioxide unless the sulfur compounds are removed before burning the fuel. Further oxidation of SO2, usually in the presence of a catalyst such as NO2, forms H2SO4, and thus acid rain.[2] Sulfur dioxide emissions are also a precursor to particulates in the atmosphere. Both of these impacts are cause for concern over the environmental impact of these fuels.
Precursor to sulfuric acid
Sulfur dioxide is an intermediate in the production of sulfuric acid, being converted to sulfur trioxide, and then to ileum, 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.
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.

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