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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

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Description of key information

The melting point of 80:20 TDI is 9.5°C and that of 65:35 TDI is 4°C.

Key value for chemical safety assessment

Additional information

A melting point of 9.5°C was established for the 80:20 mixture (2,4-TDI: 2,6-TDI), whereas the 65:35 mixture has a melting point of 4°C. Because of its presumably much higher volume, the value of the 80:20 mixture is used in the CSA.