Sodium Nitrite

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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.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

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.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
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