Article keywords: Calcium nitrite, Calcium nitrite applications, Calcium nitrite industry, Calcium nitrite manufacturers
Calcium nitrite has the molecular formula Ca(NO2)2 and is prepared by the reaction of sodium nitrite with lime milk or the reaction of sodium nitrite with calcium nitrate solution. It is a white or light yellow hexagonal crystal with a purity greater than 90%. It has antiseptic, antifreeze, quick-setting, and strengthening effects. Adding 2% calcium nitrite to concrete can prevent chemical corrosion of reinforcing steel, extending the service life of bridges by 15-20 years and increasing compressive strength by 10-25 MPa.
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Calcium nitrite can also lower the freezing point of mortar and concrete and has an early strength effect. The antifreeze and corrosion inhibition properties of calcium nitrite are superior to those of sodium nitrite.
Uses: It is mainly used as a raw material for cement additives, rust inhibitors, antifreeze agents, heavy oil detergents, and lubricating oil emulsifiers.
Post time: Jan-28-2026
