| Customization: | Available |
|---|---|
| CAS No.: | 7681-57-4 |
| Formula: | Na2s2o5 |
|
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Discover Premium Economical Food Preservatives: Sodium Metabisulfite - Your Essential Ingredient for Freshness!
Sodium Metabisulfite Sodium metabisulfite, a versatile compound, appears as a white or yellow crystalline powder or small crystal with a distinctive, strong SO2 aroma. It boasts a specific gravity of 1.4 and readily dissolves in water, creating an acidic aqueous solution. Upon contact with strong acids, it liberates SO2 to form corresponding salts. Notably, when exposed to air, it undergoes oxidation and involves Na2S2O5, making prolonged storage unfeasible. At temperatures exceeding 150 degrees Celsius, it decomposes, releasing SO2.
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INDEX OF SODIUM METABISULFITE |
CONTENT |
|
|
FOOD GRADE |
INDUSTRIAL GRADE |
|
|
PURITY (AS NA2S2O5) |
97%MIN |
96%MIN |
|
SO2 |
65.0%MIN |
65%MIN |
|
AS |
0.0002% MAX |
- |
|
HEAVY METALS (AS Pb) |
0.0005% MAX |
- |
|
SE |
0.0005% MAX |
- |
|
IRON (Fe) |
0.001% MAX |
0.002% MAX |
|
WATER TREATMENT |
0.02% MAX |
0.05% MAX |
|
PH VALUE |
4.0-4.8 |
4.0-4.8 |
|
PURITY (AS NA2S2O5) |
97% MIN |
96% MIN |
(1) Food Grade Excellence: As a bleaching agent, it enhances the appearance of candies, cakes, and bamboo shoots. It acts as a leavening agent in bread and crackers. Its antiseptic and germicidal properties preserve the freshness of fruit juices, canned foods, brewed products, and stored cereal foods. Furthermore, it serves as an inhibitor and freshening agent for day lilies, seafood, fruits, and vegetables.
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