Calcium nitrite, with the chemical formula Ca(NO2)2 and CAS number 13780-06-8, is an inorganic compound that appears as a white to yellowish solid. It is highly soluble in water, forming a clear solution that can be slightly alkaline. Calcium nitrite is primarily used as a corrosion inhibitor in concrete and as a food preservative due to its ability to prevent the growth of harmful bacteria. It serves as a source of nitrite ions, which can react with amines to form nitrosamines, a concern in food safety. In addition, it is utilized in the production of fertilizers and as a component in various chemical syntheses. The compound is hygroscopic, meaning it can absorb moisture from the air, which can affect its stability and handling. Safety precautions are necessary when working with calcium nitrite, as it can be harmful if ingested or inhaled, and it may cause skin and eye irritation. Proper storage in a cool, dry place is recommended to maintain its integrity.

Calcium nitrite has the formula of Ca(NO2)2 and the
molecular weight of 132.0894 g/mol. It can be made by
the usual double decomposition reaction of sodium
nitrite and CaCl2. It forms a tetrahydrate that is isomorphous
with the strontium and barium salts:
2Na2NO2 (aq) + CaCl2 ? Ca(NO2)2 (aq) + 4NaCl (aq)

Calcium nitrite

13780-06-8: Calcium nitrite, with the chemical formula Ca(NO2)2 and CAS number 13780-06-8, is an inorganic compound that appears as a white to yellowish solid. It is highly soluble in water, forming a clear solution that can be slightly alkaline. Calcium nitrite is primarily used as a corrosion inhibitor in concrete and as a food preservative due to its ability to prevent the growth of harmful bacteria. It serves as a source of nitrite ions, which can react with amines to form nitrosamines, a concern in food safety. In addition, it is utilized in the production of fertilizers and as a component in various chemical syntheses. The compound is hygroscopic, meaning it can absorb moisture from the air, which can affect its stability and handling. Safety precautions are necessary when working with calcium nitrite, as it can be harmful if ingested or inhaled, and it may cause skin and eye irritation. Proper storage in a cool, dry place is recommended to maintain its integrity.

CAS 13780-06-8

Calcium nitrite

Calcium nitrite

Ref: 54-IN14140