Sodium nitrite

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Sodium nitrite

CAS : 7632-00-0

MF: NaNO2

MW: 68.995

Properties:

White to light yellow granules, bars, or powder. Hygroscopic. Decomposed when heated to 320 °C or above. Slowly oxidize to sodium nitrate in the air. Released brown nitrous oxide gas in weak acid. Soluble in 1.5 times cold water

and 0.6 times boiling water, slightly soluble in ethanol. The aqueous solution is alkaline with a pH of about 9. Relative density 2.17. Melting point is 270 ℃. It is oxidizing, burns and explodes in contact with organic matter, and emits poisonous and irritating gases of nitrogen peroxide and nitrogen oxide.

Application:

1.sodium nitrite is mainly used to know nitro compounds, azo dyes and other raw materials, 
2.sodium nitrite as the mordant for dyeing, bleaching agents 
3.sodium nitrite  also used as a metal heat treatment, plating corrosion inhibitors, 
4.sodium nitrite used for instrument disinfection medicine, preservatives. 
5.sodium nitrite as cement early strength agent, antifreeze, etc. 
6.sodium nitrite  in meat products used in the color development processing agent, anti-microbial agents, preservatives.