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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 as well as 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-H319-H373
May intensify fire; oxidizer. Toxic if swallowed. Causes serious eye irritation. May cause damage to organs through prolonged or repeated exposure.
Precautionary Statements: P210-P220-P221-P260-P264b-P270-P271-P280i-P281-P301+P310-P304+P340-P305+P351+P338-P308+P313-P330-P370+P378q-P501c
Keep away from heat/sparks/open flames/hot surfaces. - No smoking. Keep/Store away from clothing/combustible materials. Take any precaution to avoid mixing with combustibles. Do not breathe dust/fume/gas/mist/vapours/spray. Wash face, hands and any exposed skin thoroughly after handling Do not eat, drink or smoke when using this product. Use only outdoors or in a well-ventilated area. Wear eye/face protection. Use personal protective equipment as required. IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. IF exposed or concerned: Get medical advice/attention. Rinse mouth. In case of fire: Use CO2, dry chemical, or foam Dispose of contents/ container to an approved waste disposal plant