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Calcium Nitrite

Calcium Nitrite HS Code:31026000


Calcium nitrite is an inorganic compound with chemical formula Ca(NO2)2. In this compound, as in all nitrites, nitrogen is in a +3 oxidation state. It has many applications such as antifreeze, rust inhibitor of steel and wash heavy oil.


  • At room temperature and pressure, the compound is an odordess white or light yellowish powder.
  • It is freely soluble in water with a density of 2.26 g/cm3.
  • Its melting point is of 390 °C and it is stable under ordinary conditions of use and storage.
  • It is also characterized for its strong oxidation character.


  • It can be use as antifreeze due to its high solubility, either in solution or powder.
  • It can promote the hydration of minerals in cement using this antifreeze at sub freezing temperature, the operative temperature can be reduced to −20 °C.
  • It also work as metal corrosion inhibitor, so it can protect steel in concrete buildings and structures from rust, to extend life of specific buildings.
  • It is used as a heavy oil detergent and in pharmaceuticals, dyes and metallurgy industries.
  • This product can substitute for sodium nitrite. Sodium nitrite is used as a heat transfer fluid in thermal energy storage units for large air-conditioning or process cooling applications, so it is widely used for high-rise construction, highways, bridges, railroads, airports, and large-scale hydraulics. It also may enable coastal areas to use high chlorine sea sand, or sea water in concrete.

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