Nitrite: Nitrites are the salts of nitrous acid. Nitrous acid is an unstable acid with the formula HNO2. The formula of the nitrite ion is NO2-.
The nitrite ion has a very different behavior from the nitrate ion, in particular, it binds to metals. Alkaline nitrites are water soluble and hygroscopic.
Toxicity of nitrites: In watercourses, especially channeled ones, and in densely inhabited regions or intensive agriculture, nitrites (or nitrates) are often found...
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