Use
Calcium nitrate [Ca(NO3)2], also known as lime nitrate,
nitrocalcite, lime saltpeter and Norwegian saltpeter,
was the first chemical nitrogenous fertilizer to be
marketed.
Calcium nitrate fertilizer absorbs considerable
amount of water, which makes it somewhat difficult to
handle. It contains 15 % nitrogen and 21 % calcium. In a
prilled form, it becomes suitable for bulk mixing and the
powdered form is useful in sprays.
Calcium nitrate controls the blossom-end rot of
tomatoes and is used in Europe as a major source of
nitrogen.
Calcium nitrate used on saline soils displaces sodium
with calcium. In addition, calcium nitrate is a non-acid
forming fertilizer and improves physical properties of
acidic and exhausted soils. However, its advantage as a
fertilizer is offset by its extreme hygroscopic nature. This
calls for its production in air-conditioned plants and the
use of sealed moisture proof bags.
Calcium nitrate, in addition to its usage as a fertilizer,
finds application in explosives, pyrotechnics, and
inorganic chemical operations.