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Urea | |
---|---|
IUPAC name | Aminomethylamide |
Other names | Carbamide |
Identifiers | |
CAS number | 57-13-6 |
SMILES | NC(=O)N |
Properties | |
Molecular formula | (NH2)2CO |
Molar mass | 60.07 g/mol |
Appearance | white odourless solid |
Density | 1.33·10³ kg/m³, solid |
Melting point | 132.7 °C (406 K) |
Boiling point | |
Solubility in water | 108 g/100 ml (20 °C) 167 g/100 ml (40 °C) 251 g/100 ml (60 °C) 400 g/100 ml (80 °C) 733 g/100 ml (100 °C) |
Acidity (pKa) | 0.18 |
Basicity (pKb) | 13.82 |
Structure | |
Dipole moment | 4.56 p/D |
Hazards | |
MSDS | ScienceLab.com |
NFPA 704 | |
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) |
Urea is an organic compound. It was first found in urine in 1773 by the French chemist Jean Rouelle. It is also called Carbamide, and its chemical names are Carbonyl Diamide (used in inorganic chemistry) and Diaminomethanal (used in organic chemistry).