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Sodium nitrate is a salt that is often added to jerky, bacon and luncheon meats. Sodium nitrite, on the other hand, is a salt and antioxidant that is commonly used to cure ham and bacon. Both chemicals act as food preservatives and add a red or pink color to processed meats, among other uses.
While sodium nitrite in VCI Paper should not be construed in the same light as a food preservative, it is not the lethal enemy that some make it out to be. It is used in the VCI industry because it is an excellent inhibitor of rust, especially for steel products.