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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Flash point is considered to be the key information for this substance and was reported to be >85°C.

Key value for chemical safety assessment

non flammable

Additional information

4-Oxo Tempo is manufactured as a liquid at standard temperature and pressure - see sections 4.1, 4.2 and 4.5. Although the substance can be purified and isolated as a solid in the laboratory, this is not standard practice on an industrial scale. A number of conventional methods are available for the determination of flammability; however the most appropriate for 4-Oxo Tempo considering its physical properties is the flash point.

The flash point of 4-Oxo Tempo was determined to be >85°C (see section 4.11) and thus the substance does not meet the criteria for classification as flammable.

Justification for classification or non-classification