Product: Sodium Nitrite
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.
|CAS number||7632-00-0 Y|
|Jmol-3D images||Image 1|
Key: LPXPTNMVRIOKMN-UHFFFAOYSA-M Y InChI=1/HNO2.Na/c2-1-3;/h(H,2,3);/q;+1/p-1
|Molar mass||68.9953 g/mol|
|Appearance||white or slightly yellowish solid|
271 °C decomp.
|Solubility in water||82 g/100 ml (20 °C)|
|EU classification||Oxidant (O)|
Dangerous for the environment (N)
|R-phrases||R8, R25, R50|
|S-phrases||(S1/2), S45, S61|
|LD50||180 mg/kg (rats, oral)|
|Other anions||Lithium nitrite|
|Other cations||Potassium nitrite|