Презентация на тему Urea (carbamide)

by animals and is the main nitrogen-containing substance in

the urine of mammals. It is a colorless, odorless solid, highly soluble in water, and practically non-toxic (LD50 is 15 g/kg for rats). Dissolved in water, it is neither acidic nor alkaline. The body uses it in many processes, most notably nitrogen excretion. The liver forms it by combining two ammonia molecules (NH3) with a carbon dioxide (CO2) molecule in the urea cycle. Urea is widely used in fertilizers as a source of nitrogen and is an important raw material for the chemical industry.

Carbamide, Carbony ldiamide and Carbonyldiamine.

urea is destined for use as a nitrogen-release fertilizer.[5] Urea

has the highest nitrogen content of all solid nitrogenous fertilizers in common use. Therefore, it has the lowest transportation costs per unit of nitrogen nutrient.

or ammonium ion (NH4+) and bicarbonate ion (HCO3−).