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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Boiling point

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Administrative data

Link to relevant study record(s)

Description of key information

232°C (decomposition)

Key value for chemical safety assessment

Additional information

The decomposition of the test substance HYEQS (LotDEG4052477) was determined by differential scanning calorimetry (DSC). The boiling point was calculated using Syracuse EPIWIN Software.


HYEQS decomposes at 232 °C (method: DSC, 3K/min).

The calculated boiling point is 509 °C.

For product safety purposes, the boiling point should be given as the decomposition temperature, 232 °C.