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Sodium nitrite is used in many industrial applications viz. in meat curing, coloring and preserving. It is used as a reagent in analytical chemistry, an antidote in cyanide poisoning, an electrolyte in electrochemical grinding, as a cooling solution in closed loop systems and as an additive in industrial greases. It finds application as a corrosion inhibitor and in the rubber industry. In metallurgy, it is used for phosphatizing and detinning. It acts as a precursor to diazo dyes, nitroso compounds and various organic compounds like pharmaceuticals. As a food additive, it is used to prevent botulism.
Cheng, D.; Yuan, K.; Xu, X.; Yan, J. The oxidative coupling of benzylic compounds catalyzed by 2, 3-dichloro-5, 6-dicyano-benzoquinone and sodium nitrite using molecular oxygen as a co-oxidant. Tetrahedron Lett. 2015, 56 (13), 1641-1644.
Kroflic?, A.; Grilc, M.; Grgic?, I. Unraveling Pathways of Guaiacol Nitration in Atmospheric Waters: Nitrite, A Source of Reactive Nitronium Ion in the Atmosphere. Environ. Sci. Technol. 2015, 49 (15), 9150-9158.
Hazard Statements: H272-H301-H330
May intensify fire; oxidizer. Toxic if swallowed. Fatal if inhaled.
Precautionary Statements: P221-P301+P310a-P304+P340-P320-P330-P405-P501a
Take any precaution to avoid mixing with combustibles. IF SWALLOWED: Immediately call a POISON CENTER/doctor IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. Specific treatment is urgent (see label). Rinse mouth. Store locked up. Dispose of contents/container in accordance with local/regional/national/international regulations.