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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Physical & Chemical properties


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Administrative data

Link to relevant study record(s)

Description of key information

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

Key value for chemical safety assessment

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.