Definition and Usage Areas of Calcium nitrate
Calcium nitrate, also called Norgessalpeter (Norwegian salt meter), is an inorganic compound with the formula Ca(NO3)2. This colorless salt absorbs moisture from the air and is often found as the tetrahydrate. It is mainly used as an ingredient in fertilizers, but there are other applications as well. Nitrocalcite is the name of a mineral, which is a hydrated Ca(NO3)2 that forms a blooming shape where manure contacts concrete or limestone in a dry environment such as a barn or cavern. Various related salts are known, such as calcium ammonium nitrate decahydrate and calcium potassium nitrate decahydrate.
- Ca(NO3)2 is used in wastewater preconditioning to prevent odor emission. Wastewater preconditioning is based on establishing an anoxic biology in the wastewater system.
- Calcium nitrate is used in accelerating concrete admixtures. This use of concrete and mortar is based on two effects. The calcium ion accelerates the formation of calcium hydroxide and thus accelerates precipitation and precipitation.
- Ca(NO3)2 is a very common coagulant in latex production, especially in dipping processes. Dissolved calcium nitrate is part of the immersion bath solution. It is immersed in the heat-generating coagulation liquid and a thin film of the immersion liquid remains on the former.
- The dissolution of calcium nitrate tetrahydrate is extremely endothermic (cooling). For this reason, calcium nitrate tetrahydrate is sometimes used for renewable cold packs.
- Ca(NO3)2 can be used as part of molten salt mixtures. Typically there are binary mixtures of calcium nitrate and potassium nitrate, or ternary mixtures, including sodium nitrate. These molten salts can be used to replace thermo oil in concentrated solar power plants for heat transfer, but they are mostly used for heat storage.
- It is used in fertilizers, explosives and pyrotechnics.
- It can be applied in irrigation systems (especially drip irrigation) in the form of direct soil application or foliar application in order to eliminate and treat calcium deficiency in agricultural plants.
- Ca(NO3)2 can be applied directly from the leaves or soil in all kinds of vegetables and fruits. Since it dissolves in 100% water and leaves no residue, it does not clog drip irrigation pipes.
- An oxidizing agent. It accelerates the combustion of non-flammable but combustible materials. An explosion may occur if large quantities contain fire or if combustible material is finely divided. Prolonged exposure to fire and heat may cause an explosion.
- May explode if shocked or heated Heating causes the release of toxic nitrogen oxides. Mixtures with alkyl esters may explode due to formation of alkyl nitrates; mixtures with phosphorus, tin(II) chloride or other reducing agents may react explosively