Sulfur dioxide (also sulphur dioxide) is a colourless gas.It is the chemical compound with the formula SO2.

Sulphur Dioxide SO2 Product Introduction:
Sulfur dioxide (also sulphur dioxide) is a colourless gas.It is the chemical compound with the formula SO2. It is a toxic gas with a pungent, irritating smell. It smells like burnt matches. It can be oxidized to sulphur trioxide, which in the presence of water vapour is readily transformed to sulphuric acid mist. SO2 can be oxidized to form acid aerosols. It is released naturally by volcanic activity and is produced as a by-product of the burning of fossil fuels contaminated with sulfur compounds.Sulfur dioxide is primarily produced for sulfuric acid manufacture.

English name Sulfur dioxide Molecular formula SO2
Molecular weight 64.0638 Appearance Colorless,non-flammable gas
CAS NO. 7446-09-5 Critical temparature 157.6℃
EINESC NO. 231-195-2 Critical pressure 7884KPa
Melting point -75.5℃ Relative density 1.5
Boiling point -10℃ Relative gas density 2.3
Solubility Water:Completely soluble DOT Class 2.3


Grade Standard Industrial Grade


Specification 99.9%
Ethylene <50ppm
Oxygen <5ppm
Nitrogen <10ppm
Methane <300ppm
Propane <500ppm
Moisture(H2O) <50ppm


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.

As a preservative reducing agent:
Sulfur dioxide is sometimes used as a preservative for dried apricots, dried figs, and other dried fruits, it is also a good reductant.

As a refrigerant
Being easily condensed and possessing a high heat of evaporation, sulfur dioxide is a candidate material for refrigerants.



Product Sulfur Dioxide SO2 Liquid
Package Size 40Ltr Cylinder 400Ltr Cylinder T50 ISO Tank
Filling Net Weight/Cyl 45Kgs 450Kgs
QTY Loaded in 20‘ Container 240 Cyls 27 Cyls
Total Net Weight 10.8Tons 12 Tons
Cylinder Tare Weight 50Kgs 258Kgs
Valve QF-10/CGA660


Post time: May-26-2021

Send your message to us: