Introduction of Urea Preparation and Properties
→ Carbonic acid is an unstable dibasic acid but its diamino derivative urea is a stable compound means that urea is diamino derivative of carbonic acid.
→ Urea has two NH2 group of basic nature but instead of that it is monoacidic base.
→ In urea one NH2 group becomes neutral because of the resonance present in it, hence urea is a mono acidic base not a diacidic base.
→ Urea was the first organic compound which was synthesised by Wohier in 1828 from inorganic compound.