| Item |
Standard (GB/T3637-2021) |
| Standard Requirement |
Test Result |
Inspect Conclusion |
| Appearance |
Colorless transparent liquid |
| SO2 Purity, %≥ |
99.90 |
99.97 |
Qualified |
| Ignition Residue, %≤ |
0.040 |
0.008 |
Qualified |
| Moisture, %≤ |
0.060 |
0.024 |
Qualified |
| General Conclusion |
Accord with GB/T3637-2021 B Grade product standard requirements. |
Sulfur Dioxide（ Sulphur Dioxide） is used as a bleaching, fumigating agent, antiseptic, disinfectant and reducing agent.
As a disinfectant, Sulfur Dioxide is used for treating wood pulp for manufacturing paper, inmetal refining, for preserving food and vegetables, and as a reducing agent.
Sulfur Dioxide also used for:
· Preserving fruits, vegetables, etc.;
· disinfectant in breweries and food factories;
· bleaching textile fibers, straw, wicker ware, gelatin, glue, beet sugars.
· Solvent and reagent in organic synthesis.
· Intermediate in the manufacture of sulfuric acid and sulfite pulp;
· casting of nonferrous metal;
· used in the food industry as a biocide and a preservative. Sulfur Dioxide also inhibits bacterial growth. Sulfur Dioxide is used in beverages, cherries, wines, and fruits.
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