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Home > Products >  Sulfur dioxide

Sulfur dioxide CAS NO.7446-09-5

  • Min.Order: 1 Kilogram
  • Payment Terms: T/T,MoneyGram,Other
  • Product Details

Keywords

  • Sulfur dioxide
  • SO2
  • dioxidedesoufre

Quick Details

  • ProName: Sulfur dioxide
  • CasNo: 7446-09-5
  • Molecular Formula: O2S
  • Appearance: white powder
  • Application: [Use 1] Mainly used in the production...
  • DeliveryTime: 4-15 workdays
  • PackAge: 25kg/bag
  • Port: China any of port
  • ProductionCapacity: 500 Metric Ton/Month
  • Purity: 98
  • Storage: Storage Precautions Store in a cool, v...
  • Transportation: by sea or air
  • LimitNum: 1 Kilogram

Superiority

1,Best Quality:

Our products have exported to Germany, Spain, UK, USA, Australia, Middle East, and so on other countries, and we have got very good feedback from our customers.so you can trust us.

2, Payment method: for example T/T, Westerm Union,other

3, Excellent Service: Best service and after-sales service to all clients.

   1)We will ship the goods within 5days after get your payments.If you want to cancel or change order, please tell me within 24hours after you finish the payment..

   2)We will ship the goods that you order from us by DHL, UPS, TNT and EUB.We will decided to choose which courier depend on different countries.To find the best way to delivery the goods for you.

   3)As usual you can get the goods with in 4-7days.If the goods were lost or not received for other reasons, please contact us immediately.

4,Fast and safe delivery:

Sample Order : As usual you can get the goods within 4-7days. We can send it via HKems, HK Air Post, DHL or other methods.

We have a professional and stable logistics, and we can deliver the package smoothly around 3 to 5 days.

Bulk Order: Shipped via sea or air, it's according to your requirement, delivery time is 7-15days after payment.

 

Details

Sulfur dioxide physical and chemical properties
Density 1.6±0.1 g/cm3
Boiling point -10.0±9.0 °C at 760 mmHg
Melting point −73 °C (lit.)
Molecular formula O2S
Molecular weight 64.064
Precise quality 63.961899
PSA 66.23000
LogP 0.41060
Appearance traits White to yellow solid
Vapor density 2.26 (21 °C, vs air)
Vapor pressure 2533.5±0.0 mmHg at 25°C
Refractive index 1.510
Storage conditions
Storage Precautions Store in a cool, ventilated, toxic gas-only warehouse. Keep away from fire and heat. The temperature of the reservoir should not exceed 30 °C. It should be stored separately from easy (combustible) fuel, oxidant, reducing agent and food chemicals. The storage area should be equipped with leakage emergency treatment equipment.
 
Stability
1. At room temperature, moist sulfur dioxide reacts with hydrogen sulfide to precipitate sulfur. Under the conditions of high temperature and catalyst, it can be reduced to hydrogen sulfide by hydrogen and reduced to sulfur by carbon monoxide. Strong oxidants oxidize sulfur dioxide to sulfur trioxide, which only oxidizes sulfur dioxide to sulfur trioxide in the presence of a catalyst. It is self-igniting and has no flammability. Liquid sulfur dioxide can dissolve organic compounds such as amines, ethers, alcohols, phenols, organic acids, aromatic hydrocarbons, etc. Most saturated hydrocarbons do not dissolve. It has a certain water solubility and reacts with water and water vapor to form toxic and corrosive vapors. Inorganic compounds such as bromine, boron trichloride, carbon disulfide, phosphorus trichloride, phosphorus oxychloride, iodine chloride, and various thionyl chlorides can be mixed with liquid sulfur dioxide in any ratio. The solubility of the alkali metal halide in liquid sulfur dioxide is reduced in the order of I->Br->Cl-. Metal oxides, sulfides, sulfates, etc. are mostly insoluble in liquid sulfur dioxide.
 
2. Chemical properties: Liquid sulfur dioxide is relatively stable and inactive. Gaseous sulfur dioxide is heated to 2000 ° C without decomposition. Does not burn, and does not form an explosive mixture with air. The chemical properties are extremely complex, and various temperatures can exhibit various effects such as aprotic solvent, Lewis acid, reducing agent, oxidizing agent, and redox reagent. Liquid sulfur dioxide can also act as a free radical acceptor. The polysulfone is obtained by reacting with a vinyl compound in the presence of an azobisisobutyronitrile free radical initiator. Liquid sulfur dioxide can be chlorosulfonated with chlorine and alkanes under illumination to form sulfonic acids in the presence of oxygen. Liquid sulfur dioxide exhibits a reduction at low temperatures, but exhibits oxidation above 300 °C.
 
3. Stability and stability
 
4. Incompatible materials Strong reducing agent, strong oxidizing agent, flammable or combustible
 
5. Conditions to avoid contact with humid air
 
6. Polymerization hazard does not polymerize
 
Water solubility grams dissolved per 100 ml of water: 9.4g / 20 ° C
Molecular Structure
1, molar refractive index: 12.05
 
2, molar volume (cm3 / mol): 40.2
 
3, isotonic capacity (90.2K): 115.1
 
4, surface tension (dyne / cm): 66.8
 
5, the polarizability (10-24cm3): 4.77
 
Computing chemistry
1. Hydrophobic parameter calculation reference value (XlogP):
 
2. Number of hydrogen bond donors: 0
 
3. Number of hydrogen bond acceptors: 2
 
4, the number of rotatable chemical bonds: 1
 
5. Number of tautomers:
 
6, topological molecular polar surface area (TPSA): 40.1
 
7, the number of heavy atoms: 6
 
8, surface charge: 0
 
9, complexity: 59.8
 
10. Number of isotope atoms: 0
 
11, determine the number of atomic stereocenters: 0
 
12. Uncertainty of the number of atomic stereocenters: 0
 
13. Determine the number of chemical bond stereocenters: 0
 
14. Uncertain chemical bond number of stereocenters: 0
 
15, the number of covalent key units: 2
 
More
1. Properties: colorless gas with pungent odor.
 
2. Melting point (°C): -75.5
 
3. Boiling point (°C): -10
 
4. Relative density (water = 1): 1.4 (-10 ° C)
 
5. Relative vapor density (air = 1): 2.25
 
6. Saturated vapor pressure (kPa): 330 (20 ° C)
 
7. Critical temperature (°C): 157.8
 
8. Critical pressure (MPa): 7.87
 
9. Octanol / water partition coefficient: -2.20
 
10. Solubility: soluble in water, ethanol, ether.
 
11. Viscosity (mPa·s, 0oC): 0.3936
 
12. Viscosity (mPa·s, -10.5oC): 0.4285
 
13. Viscosity (mPa·s, -15oC): 0.4521
 
14. Viscosity (mPa·s, -33.5oC): 0.5508
 
15. Vapor pressure (kPa, -268C): 338.42
 
16. Vapor pressure (mmHg, 21oC): 1779
 
17. Heat of evaporation (KJ/mol, -10.08oC): 24.95
 
18. Heat of fusion (KJ/mol): 7.41
 
19. Heat of formation (KJ/mol, 25oC): 297.01
 
20. Boiling point rise constant: 1.48
 
21. Conductivity (S/m): 3 × 10-8

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