Magnesium nitrate refers to inorganic compounds with the system Mg(NO3)2(H2O)x, the place x = 6, 2, and 0. All are white solids.[2] The anhydrous materials is hygroscopic, rapidly forming the hexahydrate upon standing in air. The entire salts are very soluble in each water and ethanol.
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Incidence, preparation, construction[edit]
Being extremely water soluble, magnesium nitrate happens naturally solely in mines and caverns as nitromagnesite (hexahydrate type).[3]
The magnesium nitrate utilized in commerce is made by the response of nitric acid and varied magnesium salts.
Use[edit]
The principal use is as a dehydrating agent within the preparation of concentrated nitric acid.[2]
Its fertilizer grade has 10.5% nitrogen and 9.4% magnesium, so it’s listed as 10.5-0-0 + 9.4% Mg. Fertilizer blends containing magnesium nitrate even have ammonium nitrate, calcium nitrate, potassium nitrate and micronutrients typically; these blends are used within the greenhouse and hydroponics commerce.
Reactions[edit]
Magnesium nitrate reacts with alkali metallic hydroxide to type the corresponding nitrate:
Since magnesium nitrate has a excessive affinity for water, heating the hexahydrate doesn’t outcome within the dehydration of the salt, however fairly its decomposition into magnesium oxide, oxygen, and nitrogen oxides:
The absorption of those nitrogen oxides in water is one potential path to synthesize nitric acid. Though inefficient, this technique doesn’t require using any robust acid.
It’s also often used as a desiccant.
References[edit] – “magnesium nitrate hexahydrate”
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