Biurea

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

Biurea
Names
Preferred IUPAC name
Hydrazine-1,2-dicarboxamide
Systematic IUPAC name
(Carbamoylamino)urea
Other names
  • Bicarbamamide
  • Bicarbamimidic acid
  • Biscarbamoylhydrazine
  • Carbamoylsemicarbazide
  • Hydrazinedicarboxamide
  • Ureidourea
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.003.408
EC Number
  • 203-747-2
UNII
  • InChI=1S/C2H6N4O2/c3-1(7)5-6-2(4)8/h(H3,3,5,7)(H3,4,6,8) Y
    Key: ULUZGMIUTMRARO-UHFFFAOYSA-N Y
  • NC(=O)NNC(N)=O
Properties
C2H6N4O2
Molar mass 118.096 g·mol−1
Appearance White crystals
Thermochemistry
−499.9–−497.5 kJ mol−1
−1.1471–−1.1447 MJ mol−1
Related compounds
Related compounds
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

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.

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