Sodium Nitrite


Also found in: Dictionary, Thesaurus, Medical, Wikipedia.

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 ?
The effect of pH and nitrite concentration on the antimicrobial impact of celery juice concentrate compared with conventional sodium nitrite on Listeria monocytogenes.
Next the diazotization of dye (4) with sodium nitrite and hydrochloric acid at 0-5degC followed by coupling with different coupling partners like H-Acid, Gamma Acid, Schaeffer acid, 2naphthol, phenylmethyl pryazolone, psulfophenylmethyl pyrazolone, resorcinol, phenol, salicylic acid, and 2, 4-diaminobenzene sulfonic acid was achieved at pH above 8.
05) in treatments with addition of sodium nitrite in the stocking, when compared to treatments with previous addition of sodium nitrite.
Researchers randomized 299 patients (64% men) from 40 treatment centers across Europe to one of three dose regimens of sodium nitrite and citric acid, or placebo.
But if you're considering using sodium nitrite, here's what to know.
Visual changes were observed with the copper coupons aged in the presence of Ethanolamine, Sodium Nitrite and Calcium Alkyl Aryl Sulfonate at high initial concentration and high temperature.
Why: Sodium nitrate and sodium nitrite are compounds added to processed meats such as bacon and ham to "cure'' them, boosting shelf life, improving flavor and adding color.
Some experts hypothesize that this rise in disease risk may be partially due to added sodium nitrite or nitrates, which are preservatives used in processing meat.
The reaction of sodium nitrite and ethyl acetoacetate in acetic acid and also the reaction of ethyl nitrite and methyl ethyl ketone in hydrochloric acid are among these reactions.
Analysis of extracts from Langendorff perfused rat heart exposed to pharmacological doses of sodium nitrite shows an increase in the total level of cardiac SNO-proteins.
And sodium nitrite prevents bacteria growth in meats, but is also used in metal coatings and textile dyes.
Sodium nitrite, an ingredient in most packaged meats, has a long history of being associated with cancer and should be avoided whenever possible.