Good Quality CAS 7446-09-5 Industrial Grade 99.9% Liquid So2 Gas Sulfur Dioxide Price

1. Description 
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3. S ulfur dioxide is the most common and simplest sulfur oxide, chemical formula SO2, it is a colorless transparent gas, pungent odor. Soluble in water, ethanol and ether. Sulfur dioxide is one of the main pollutants in the atmosphere. The gas is emitted during volcanic eruptions, and sulfur dioxide is also produced in many industrial processes .

1. Specification:
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Properties:
Sulfur dioxide has a pungent odor and is soluble in water and some organic solvents.
Its density is greater than that of air and it is toxic.
At normal temperature, sulfur dioxide is non-flammable, but it can react with many substances to form sulfates.

Method:
The most common method is to generate sulfur dioxide by burning sulfur-containing compounds, such as sulfur or gypsum.
In industry, sulfur dioxide can also be produced by calcining ammonium sulfate ore or through the use of sulfuric acid.

Safety Information:
Sulfur dioxide is a toxic gas that has a stimulating effect on the respiratory system, eyes, and skin.
When handling sulfur dioxide, proper ventilation measures must be taken, and appropriate personal protective equipment such as respirators, goggles, and gloves should be provided.
When storing and transporting sulfur dioxide, it is necessary to avoid contact with oxidants, alkaline substances, and flammable materials to prevent dangerous reactions.



1. Packing :

40L - 800L cylinder , ISO tank

1. Application:

① Synthesizing sulfites, hydrogen sulfites, and sulfuric acid

② Sterilizing fermentation equipment in wine and beer production to prevent mold and bacterial growth, and to regulate fermentation

③ Used in disinfecting and fumigation

④ Utilized as environmental calibration gases

⑤ Employed in the float glass manufacturing process

(1) Liquid sulfur dioxide is usually stored in steel cylinders for use. Its heat of vaporization is high, and it can absorb a large amount of heat during evaporation, making it a useful refrigerant. Liquid sulfur dioxide can also dissolve many organic and inorganic substances, so it is also a useful non-aqueous solvent. It can also be used for the refining of various lubricants.
       (2) It is mainly used for the production of sulfur trioxide, sulfuric acid, sulfites, and thiosulfates, and is also used as a fumigant, preservative, disinfectant, and reducing agent, etc.
       (3) Sulfur dioxide is a reducible bleaching agent permitted in China. It has bleaching effects on food and has a strong inhibitory effect on the oxidase in plant-based foods. China stipulates that it can be used in wine and fruit wine, with a maximum usage of 0.25 g/kg and a residue limit of no more than 0.05 g/kg.
      (4) In the industrial sectors of pesticides, artificial fibers, dyes, etc.
      (5) It is used for the production of sulfur and as a pesticide, fungicide, disinfectant.
      (6) In addition, dry sulfur dioxide is often stored in steel cylinders. Due to its high heat of vaporization, it can absorb a large amount of heat during evaporation, so it can also be used as a refrigerant.
      (7) When used as a food additive, sulfur dioxide must be strictly followed according to national standards.