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Sodium nitrite is a chemical compound commonly used as a food additive, particularly as a preservative in processed meats. It is a white or slightly yellow crystalline powder that is soluble in water. Sodium nitrite works by inhibiting the growth of bacteria, particularly Clostridium botulinum, which can cause botulism, and it also helps to maintain the color and flavor of cured meats.
| Chemical formula | NaNO2 |
| Appearance | White to yellow crystalline powder |
| Purity | Typically 95% or higher |
| Solubility | Soluble in water |
| Storage conditions | Cool, dry place away from light |
When purchasing sodium nitrite, buyers should consider the required purity levels and any specific food safety certifications. It is also important to specify the intended application, as different industries may have varying regulations and standards. Quantities should be clearly stated, as bulk orders may be subject to different pricing structures.
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It is primarily used as a preservative in cured meats and as a color fixative.
When used in regulated amounts, sodium nitrite is considered safe for consumption, but excessive intake can be harmful.
It should be stored in a cool, dry place away from light and moisture.
Regulations vary by country, but it is generally regulated as a food additive with specified maximum levels.
Sodium nitrite is not derived from animal sources, but its use in vegetarian products should be carefully considered based on overall product formulation.
Sodium nitrite (NaNO2) is used primarily as a preservative, while sodium nitrate (NaNO3) is often used as a fertilizer and can convert to nitrite in the body.