Biurea is a chemical compound with the molecular formula C2H6N4O2.

It is produced in food products containing azodicarbonamide, a common ingredient in bread flour, when they are cooked.

[2] Upon exposure, biurea is rapidly eliminated from the body through excretion.

[3] Biurea is produced from urea and hydrazine by transamidation.

Its major use is as a chemical intermediate in the production of azodicarbonamide, a common blowing agent.