Urea - 65936
Code: 65936
Urea
Puriss. p.a., Reagent ACS, Reagent European Pharmacopoeia
CAS Number: 57-13-6
Linear Formula: NH2CONH2
EC Number: 200-315-5
| Property |
Value |
| Identity |
complying |
| Assay |
min. 99.5 % |
| Assay (calculated to the dried substance) |
99 - 101 % |
| Melting range |
132 - 135 °C |
| Water insoluble matter |
max. 0.01 % |
| Loss on drying (105°C, 1 h) |
max. 1.0 % |
| Sulfated ash |
max. 0.01 % |
| Ammonium (NH4) |
max. 0.05 % |
| Alkalinely reacting substances |
complying |
| Iron (Fe) |
max. 0.0002 % |
| Heavy metals (as Pb) |
max. 0.0005 % |
| Chloride (Cl) |
max. 0.0005 % |
| Sulfate (SO4) |
max. 0.001 % |
| Biuret (carbamylurea) |
max. 0.1 % |
| Appearance of the solution |
complying |
| Property |
Value |
| Freezing point |
133 - 134 °C |
| Density |
1.32 g/cm3 |