Sodium Nitrite

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Related to Nano2: Diazotization

sodium nitrite

[′sōd·ē·əm ′nī‚trīt]
(inorganic chemistry)
NaNO2 A fire-hazardous, air-sensitive, yellowish powder, soluble in water; decomposes above 320°C; used as an intermediate for dyestuffs and for pickling meat, textiles dyeing, and rust-proofing, and in medicine.

Sodium Nitrite


NaNO2, a salt; colorless or yellowish crystals. Density, 2.17 g/cm3; melting point, 271°C. Solubility in water, 45.07 percent at 22°C and 61.5 percent at 99.9°C; aqueous NaNO2 solutions are alkaline. Under the action of acids, sodium nitrite decomposes, liberating nitric oxides. It is prepared upon absorption of nitric oxides by alkaline solutions and subsequent boiling down; NaNO2 crystallizes upon cooling. Sodium nitrite is used in diazotization reactions in the production of azo dyes, as an oxidizing agent to liberate iodine from iodides, and to preserve the red color of meat in the production of sausage; it is also used in medicine as a vasodilator.

References in periodicals archive ?
300uL of each methanolic extract of plant was mixed with 150uL of NaNO2 and 3.
15 mL of NaNO2 (5% w/v) and the mixture was incubated at room temperature for 6 min.
The effects of salt and NaNO2 on fatty acid composition, free amino acids, Microbial counts and sensory characteristics of dry-cured ham processed under Korean environment.
After 24 d, the psocids growing on NaCl and NaNO2 salt solutions increased to the mean populations of 24+-5.
2% Amaranthus pigments had highest flavor scores, which was equal to the NaNO2 samples.