Sodium nitrite

Author: Prof. Dr. med. Peter Altmeyer

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Last updated on: 29.10.2020

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Definition
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Sodium nitrite (molecular formula: NaNO2); CAS No: 7632-00-0.

Sodium salt of nitrous acid (see nitrites below). Approved as preservative food additive (E 250). When mixed with common salt, as a nitrite curing salt (the sodium nitrite content of curing salt must not exceed 0,5 %) it gives the meat a red colour. The red-coloured nitrosomyoglobin is formed. The growth of bacteria (curing) is also prevented.

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E 250; Food additives (overview);

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Last updated on: 29.10.2020