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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Melting point / freezing point

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Administrative data

Link to relevant study record(s)

Description of key information

 The melting point range of 4,4'-MDI-DPG-TPG is -19.3 °C to 39.0 °C.  The melting point is reported as the temperature at which melting was complete.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
39 °C

Additional information

Upon heating of the frozen test substance, the material started to melt at -19.30C but did not melt completely . The test material started also to become turbid, indicating crystallisation of the substance. The test material turned into a clear molten mass at a temperature range of

36.30C – 39.00C.

Therefore the melting temperature range is defined as -19.30C to +39.0C