| Customization: | Available |
|---|---|
| CAS No.: | 7681-57-4 |
| Formula: | Na2s2o5 |
|
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Discover the Premium Economical Food Preservatives: Sodium Metabisulfite
Sodium Metabisulfite This remarkable substance presents as a white or yellow crystalline powder or small crystal, distinguished by its strong SO2 odor. With a specific gravity of 1.4, it exhibits high solubility in water, forming an acidic aqueous solution. Upon contact with strong acids, it liberates SO2 and forms a corresponding salt. Exposure to air leads to oxidation, and due to its chemical composition, Na2S2O5, it demands careful storage as it cannot be preserved for extended periods. Notably, at temperatures above 150 degrees Celsius, it decomposes by 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 Qualities: It is an essential bleach agent for items such as candies, cakes, and bamboo shoots. As a leavening agent, it enhances products like bread and crackers. It serves as a potent antiseptic and germicide for fruit juices, canned foods, brews, and cereals - effectively safeguarding storage. Its role as an inhibitor and freshening agent is vital for day lilies, seafood, fruits, and vegetables.
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