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Physical & Chemical properties

Flammability

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Description of key information

Published handbook data and a modern proprietary study indicate that urea is non-flammable.

Key value for chemical safety assessment

Flammability:
non flammable

Additional information

Handbook data (Sax & Lewis, 1987) and a proprietary study (Gwerder et al, 2009) indicate that urea is non-flammable.

Justification for classification or non-classification

There is no evidence in a guideline-compliant study that urea is flammable: no classification is proposed.