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Sodium Nitrite
Sodium Nitrite

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Sodium Nitrite
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Product: Sodium Nitrite


High Quality

Earliest Shipment

Competitive price

Professional Service

Sodium nitrite, with chemical formula NaNO2, is used as a color fixative and preservative in meats and fish. When pure, it is a white to slight yellowish crystalline powder. It is very soluble in water and is hygroscopic. It is also slowly oxidized by oxygen in the air to sodium nitrate, NaNO3.

Sodium nitrite is also used in the manufacture of diazo dyes, nitroso compounds, and other organic compounds; in dyeing and printing textile fabrics and bleaching fibers; in photography; as a laboratory reagent; in metal coatings for phosphatizing and detinning; and in the manufacture of rubber chemicals. It may also be used as an electrolyte in electrochemical grinding manufacturing processes, typically diluted to about 10% concentration in water. Sodium nitrite also has been used in human and veterinary medicine as a vasodilator, a bronchodilator, and an antidote for cyanide poisoning.



Sodium nitriteIdentifiersPropertiesStructureHazardsRelated compounds
CAS number7632-00-0 Y
ChemSpider22689 Y
EC number231-555-9
UN number1500
RTECS numberRA1225000
ATC codeV03AB08
Jmol-3D imagesImage 1
[show]InChI=1S/HNO2.Na/c2-1-3;/h(H,2,3);/q;+1/p-1 Y
Key: LPXPTNMVRIOKMN-UHFFFAOYSA-M Y InChI=1/HNO2.Na/c2-1-3;/h(H,2,3);/q;+1/p-1
Molecular formulaNaNO2
Molar mass68.9953 g/mol
Appearancewhite or slightly yellowish solid
Density2.168 g/cm3
Melting point

271 °C decomp.

Solubility in water82 g/100 ml (20 °C)
Crystal structureTrigonal
EU Index007-010-00-4
EU classificationOxidant (O)
Toxic (T)
Dangerous for the environment (N)
R-phrasesR8, R25, R50
S-phrases(S1/2), S45, S61
NFPA 704031OX
489 °C
LD50180 mg/kg (rats, oral)
Other anionsLithium nitrite
Sodium nitrate
Other cationsPotassium nitrite
Ammonium nitrite

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