UREA

UREA
Wohler’s classical synthesis of urea from ammonium cyanate may be carried
out by evaporating solutions of sodium cyanate and ammonium sulphate

In aqueous solution at 100° the change is reversible and equilibrium is reached when 95 per cent, of the ammonium cyanate has changed into urea. Urea is less soluble in water than is ammonium sulphate, hence [...]