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workers at risk of being exposed to sulfur dioxide include the following: Factory workers in industries where it occurs as a
by-product, such as copper smelting or power plants.
Sulfur dioxide occurs as a colorless gas at room temperature and pressure, with a strong, suffocating, pungent odor. It is
noncombustible and is a strong reducing agent.
Product Name
|
Sulfur dioxide
|
Purity
|
99.9-99.999%
|
CAS No.
|
7446-09-5
|
EINECS No.
|
231-195-2
|
MF
|
O2S
|
Molar mass:
|
7446-09-5.mol
|
UN No.
|
2037
|
Hazard Class
|
2.3
|
Appearance:
|
colorless
|
Odor:
|
Pungent
|
Inspection item
|
unit
|
Requirement
|
Inspection result
|
Product appearance
|
/
|
clear and colorless
|
clear and colorless
|
Product odor
|
/
|
odorless
|
odorless
|
Purity,%,≧
|
m/m
|
99.9
|
99.99
|
Moisture,%,≦
|
m/m
|
0.006
|
0.0004
|
Acidity (as HCL),≦
|
m/m
|
0.0001
|
<0.00001
|
Evaporating residue,%,≦
|
m/m
|
0.02
|
0.001
|
Package Size
|
40Ltr Cylinder
|
800Ltr Cylinder
|
|
Filling Content/Cyl
|
45Kgs
|
980Kgs
|
|
QTY Loaded in 20'Container
|
210 Cyls
|
15 Cyls
|
|
Total Volume
|
9.45Tons
|
7.8Tons
|
|
Valve
|
QF-10
|
Usage
|
Typical Application
|
Food industry
|
Sulfur dioxide is sometimes used as a preservative for dried apricots, dried figs, and other dried fruits, owing to its
antimicrobial properties. As a preservative, it maintains the colorful appearance of the fruit and prevents rotting. It is also added to sulfured molasses. |
Refrigeration
|
Being easily condensed and possessing a high heat of evaporation, sulfur dioxide is a candidate material for refrigerants. Prior
to the development of chlorofluorocarbons, sulfur dioxide was used as a refrigerant in home refrigerators |