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Physical & Chemical properties

Melting point / freezing point

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Description of key information

Published handbook data report the melting point of urea to be 133.3 degrees Celsius; a value of 134 degrees Celsius is reported in a proprietary, Guideline-compliant study.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
407 K

Additional information

The melting point of urea at atmospheric pressure is reported to be 133.3 degrees Celsius (CRC Handbook, 2006); the melting point of urea was measured to be 134 °C by differential scanning calorimetry (Gwerder et al, 2009).