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Sulfur Dioxide SO2

Sulfur Dioxide SO2


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


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.



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