Ammonium nitrate NH4NO3 - is a salt of nitric acid medium. It is a white crystalline substance.
It is widely used in industry and miningcase as a mixture of ammonium nitrate with different types of fuels and explosives. Most of the ammonium nitrate used as a good nitrogen fertilizer or as a product from the preparation of other fertilizers.
There are three ways to get more salt.
One is known as a method Odd or nitrophosphate method.
You will need
- nitric acid, water, sodium phosphate (apatite), the tubes
Take apatite. Natural calcium phosphate - class mineral phosphates, pale green, blue, yellow-green or pink color with a glassy luster. Place a small amount of a substance in a test tube.
Then dissolve calcium phosphate carefully. To this, add the water and nitric acid. During the reaction, formation of calcium nitrate, phosphoric acid and voda.Ca3 (PO4) 2 + 6HNO3 + 12HOH> 2H3PO4 + 3Ca (NO3) 2 + 12HOH
Cool the resulting solution to 0 C. Thus obtained calcium nitrate crystallizes, forming a complex compound, Ca (NO3) 2 4HOH -? Calcium nitrate tetrahydrate.
Separate connection of phosphoric acid. This white substance, light gray, light beige color.
In the resulting crystalline solid andremote phosphoric acid exposure to ammonia. As a result, a white precipitate of calcium phosphate and the desired ammoniya.Ca nitrate (NO3) 2 + 4H3PO4 + 8NH3> CaHPO4v + 2NH4NO3 + 3 (NH4) 2HPO4