Calcium Nitrate


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calcium nitrate

[′kal·se·əm ′nī‚trāt]
(inorganic chemistry)
Ca(NO3)2·4H2O Colorless, monoclinic crystals that are soluble in water; the anhydrous salt is very deliquescent; used as a fertilizer and in explosives. Also known as nitrocalcite.

Calcium Nitrate

 

(also called nitrocalcite, lime saltpeter, Norge niter), Ca(NO3)2⋅4H2O, a salt; colorless crystals that dissolve in water of crystallization at 42.7°C. Calcium nitrate crystallizes into an anhydrous salt at temperatures above 51.1°C. Its density is 2.36 g/cm3. Because it is highly hygroscopic, it must be stored under moisture-free conditions. The solubility of anhydrous calcium nitrate is 127 g per 100 g H2O at 20°C. Calcium nitrate is obtained by treating limestone with weak nitric acid; it is also formed during the absorption of nitrogen oxide by milk of lime.

Calcium nitrate is used as a nitrogen fertilizer in agriculture and is produced in granulated form. Commercial products contain no less than 15.5 percent nitrogen; furthermore, 4-7 percent ammonium nitrate is added during production in order to reduce the hygroscopicity of the fertilizer; the moisture content should not exceed 15 percent. Calcium nitrate is applied to the soil for all crops but is most effective in acidic soils, particularly for topdressing of winter crops in the spring.

References in periodicals archive ?
In this regard, various approaches designed to improve the quality of calcium nitrate in solution and in granulated form, including the approach of pure calcium obtaining [3].
Second, early in the growing season in the Sacramento River Delta, some vineyards have pale foliage that fails to darken after calcium nitrate applications.
Therefore calcium nitrate application for its fast absorbent can effects on this matter.
Using this approach, Ripl (1976) developed a pioneering study to retain phosphorus in lake sediments by applying a solution of calcium nitrate in sediments and thereby suppressing the release of phosphorus to the water column.
Treat affected patches with a solution of calcium nitrate.
The commonly-used different combinations of major salts are ammonium sulphate, potassium nitrate, calcium nitrate, potassium dihydrogen phosphate, magnesium sulphate.
QI can't buy calcium nitrate to prevent blossom end rot of my tomatoes.
In colder weather and stressful periods, natural additives and alternative fertilizers, such as calcium nitrate, potassium-based fertilizer, and compost tea, will improve the turf's resistance to disease.
The extended stops will decrease NPK production by about 200,000 tonnes, with Calcium Nitrate production dropping by about 50,000 tonnes, Yara added.
The experimental treatments consisted of spraying the persimmon trees with a calcium or boron solutions, from January 15th until harvest, at 20 days interval: T1) water (control); T2) Calcium nitrate 0.
and on soil metal solubility as assessed by extraction with dilute calcium nitrate solution.