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Sodium Metabisulfite is a white crystalline powder commonly used as a food additive and preservative. It is derived from sodium and sulfur dioxide and functions primarily as an antioxidant and antimicrobial agent. This compound helps to prevent spoilage and maintain the freshness of various food products by inhibiting the growth of bacteria and fungi.
| Chemical formula | Na2S2O5 |
| Purity | Typically 95% to 99% |
| Appearance | White to yellowish crystalline powder |
| Solubility | Soluble in water |
| pH level | Typically between 4.5 and 5.5 in solution |
When selecting Sodium Metabisulfite, buyers should consider the desired purity level and any specific food safety certifications required for their application. It is also important to specify the intended use, as different industries may have varying standards for grades and tolerances. Quantities should be determined based on production needs, and bulk purchasing options may be available for larger operations.
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It is primarily used as a preservative and antioxidant in food and beverage applications.
Yes, it is generally recognized as safe when used within regulated limits.
No, it is not permitted in organic food products.
It should be stored in a cool, dry place away from moisture and strong acids.
It can cause allergic reactions in some individuals, particularly those with asthma.
Typically, it has a shelf life of 2 to 3 years when stored properly.