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.^[2] Upon exposure, biurea is rapidly eliminated from the body through excretion.^[3]

Biurea

Names
Preferred IUPAC name Hydrazine-1,2-dicarboxamide[citation needed]
Systematic IUPAC name (Carbamoylamino)urea[1]
Other names Bicarbamamide[citation needed] Bicarbamimidic acid[citation needed] Biscarbamoylhydrazine[citation needed] Carbamoylsemicarbazide[citation needed] Hydrazinedicarboxamide[citation needed] Ureidourea[citation needed]
Identifiers
CAS Number	110-21-4 Y
3D model (JSmol)	Interactive image
ChemSpider	7748 Y
ECHA InfoCard	100.003.408
EC Number	203-747-2
PubChem CID	8039
UNII	POJ4UOY01H Y
CompTox Dashboard (EPA)	DTXSID6024628
InChI 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
SMILES NC(=O)NNC(N)=O
Properties
Chemical formula	C2H6N4O2
Molar mass	118.096 g·mol−1
Appearance	White crystals
Thermochemistry
Std enthalpy of formation (ΔfH⦵298)	−499.9–−497.5 kJ mol−1
Std enthalpy of combustion (ΔcH⦵298)	−1.1471–−1.1447 MJ mol−1
Related compounds
Related compounds	1,2-Dimethylhydrazine Daminozide
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.^[4]