Urea
compositum chemicum
Urea est materies organica, cuius formula est:
![](http://upload.wikimedia.org/wikipedia/commons/thumb/3/3d/Harnstoff.svg/220px-Harnstoff.svg.png)
![](http://upload.wikimedia.org/wikipedia/commons/thumb/2/29/Urea-3D-vdW.png/220px-Urea-3D-vdW.png)
![](http://upload.wikimedia.org/wikipedia/commons/thumb/1/1a/Urea_Synthesis_Woehler.png/220px-Urea_Synthesis_Woehler.png)
Anno 1828 uream artificiose creavit ex ammonia et acido cyanico Fridericus Wöhler chemicus Germanus.
Nexus interni
Nexus externi
recensere- "Urea" in PPDB: Pesticide Properties DataBase