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Biurea
Names
	Preferred IUPAC name Hydrazine-1,2-dicarboxamide[citation needed]
	Systematic IUPAC name (Carbamoylamino)urea
	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 ;
3D model (JSmol)	Interactive image;
ChemSpider	7748 ;
ECHA InfoCard	100.003.408
EC Number	203-747-2;
PubChem CID	8039;
UNII	POJ4UOY01H ;
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) Key: ULUZGMIUTMRARO-UHFFFAOYSA-N ;
	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 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.^[4]

References

^ "Biurea - Compound Summary". PubChem Compound. USA: National Center for Biotechnology Information. 26 March 2005. Identification. Retrieved 27 June 2012.
^ Azodicarbonamide, FAO Nutrition Meetings, Report Series No. 40A,B,C
^ Mewhinney, JA; Ayres, PH; Bechtold, WE; Dutcher, JS; Cheng, YS; Bond, JA; Medinsky, MA; Henderson, RF; Birnbaum, LS (1987). "The fate of inhaled azodicarbonamide in rats" (PDF). Fundamental and Applied Toxicology. 8 (3): 372–81. doi:10.1016/0272-0590(87)90086-8. PMID 3569707.
^ Eugene F. Rothgery (2004). "Hydrazine and Its Derivatives". Kirk-Othmer Encyclopedia of Chemical Technology. John Wiley and Sons. doi:10.1002/0471238961.0825041819030809.a01.pub2.