| Customization: | Available |
|---|---|
| CAS No.: | 7681-57-4 |
| Formula: | Na2s2o5 |
|
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Discover our Premium Economical Food Preservatives: Sodium Metabisulfite
Sodium Metabisulfite Sodium Metabisulfite is an impressive white or yellow crystalline powder or small crystals, recognized by its strong SO2 odor. With a specific gravity of 1.4, it is water-soluble, and forms an acidic aqueous solution. Upon contact with strong acids, it releases SO2, resulting in a corresponding salt. It must be noted that when exposed to air, it oxidizes due to its chemical structure, Na2S2O5, making it unsuitable for long-term storage. At temperatures exceeding 150 degrees Celsius, this compound decomposes to release 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 Applications: This versatile compound serves as an exceptional bleach agent for products like candies, cakes, and bamboo shoots. It acts as a leavening agent in bread and crackers, and as an effective antiseptic and germicide in fruit juices, tinned foods, brews, and cereals requiring prolonged storage. Additionally, it functions as an inhibitor and freshening agent for products such as day lilies, seafood, fruits, and vegetables.
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