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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

In a differential scanning calorimetry assay a melting temperature of 230 °C, with an onset of ca. 204 °C was determined. Decomposition started at ca. 235 °C, with a peak of 249 °C.
According to 2 older handbooks, melting occurs at 270 to 277.5 °C, decomposition starts at >300 °C.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
230 °C

Additional information

The discrepancy between the handbook data and the more recent determination by DSC might possibly be explained by a remark in Beilsteins Handbuch der Organischen Chemie, 1963, where it is stated: "Formation of high molecular condensation products on heating to 200 °C".