| Customization: | Available |
|---|---|
| CAS No.: | 7681-57-4 |
| Formula: | Na2s2o5 |
|
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Introducing our Premium Economical Food Preservatives: Sodium Metabisulfite - the ideal choice for maintaining freshness and quality in your food products.
Sodium Metabisulfite Sodium Metabisulfite is a white or yellow crystalline powder or small crystal, boasting a pronounced SO2 aroma. With a specific gravity of 1.4, it is highly soluble in water, creating an acidic aqueous solution. Exposure to strong acids triggers the release of SO2, forming corresponding salts. Susceptible to oxidation in the air, it is crucial to note that it is Na2S2O5 and requires proper storage as it cannot be kept for extended periods. When heated above 150 degrees Celsius, it decomposes, liberating 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: As a bleaching agent, it enhances the appearance of candies, cakes, and bamboo shoots. It serves as a leavening agent in products like bread and crackers. Acting as an antiseptic and germicide, it preserves fruit juices, canned foods, brews, and cereals. Additionally, it functions as an inhibitor and freshener for day lilies, seafood, and a variety of fruits and vegetables.
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