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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Auto flammability

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Administrative data

Link to relevant study record(s)

Description of key information

Using a linear increase in temperature of 0.5 K/min, the test substance shows one exothermic reactions. The exothermic reaction started at about 252 °C. A maximum temperature of about 278 °C was measured in the sample cube. At the end of the run, the test substance showed a loss of mass of about 74 % and coloured black. In conclusion, the test substance is not auto-flammable, according to the criteria as described in the guidelines.

Key value for chemical safety assessment

Additional information

The relative self-ignition temperature of the test substance was determined according to EU method A.16. Using a linear increase in temperature of 0.5 K/min, the test substance shows one exothermic reactions. The exothermic reaction started at about 252 °C. A maximum temperature of about 278 °C was measured in the sample cube. At the end of the run, the test substance showed a loss of mass of about 74 % and coloured black. As mentioned in IUCLID section 4.2 at temperatures in the vicinity of the melting temperature (225 °C) the test substance started to decompose. In conclusion, Urea 6 is not auto-flammable, according to the criteria as described in the guidelines.