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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Vapour pressure

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Administrative data

Link to relevant study record(s)

Description of key information

about 0.02 bar at 250°C
about 0.15 bar at 300°C
about 1.01 bar at 359°C
about 4.8 bar at 420°C

Key value for chemical safety assessment

Vapour pressure:
0.02 hPa
at the temperature of:
250 °C

Additional information

Data of hexagonal form (see remark CSR 1.1.).

Orthorhombic forms exhibit almost no vapopurpressure below 400°C