| Customization: | Available |
|---|---|
| CAS No.: | 7681-57-4 |
| Formula: | Na2s2o5 |
|
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Discover Premium Economical Food Preservatives with Sodium Metabisulfite
Sodium Metabisulfite Sodium Metabisulfite presents itself as a distinctive white or yellow crystalline powder or small crystal, exuding a potent SO2 aroma. It boasts a specific gravity of 1.4 and is water-soluble, where its aqueous solution reveals an acidic nature. Upon interacting with strong acids, it liberates SO2 to form a corresponding salt, and when exposed to air, oxidation occurs. Its chemical identity is Na2S2O5, indicative of the necessity for short-term storage. At temperatures exceeding 150 degrees Celsius, it undergoes decomposition, 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 Uses: As a bleaching agent, it finds use in candies, cakes, and bamboo shoots. It serves as a leavening agent in bread and crackers. Its antiseptic and germicide properties preserve fruit juices, tinned foods, and cereals during storage. Additionally, it acts as an inhibitor and freshening agent for items such as day lilies, seafood, and an array of fruits and vegetables.
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