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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Melting points (at normal pressure):
14.37 °C, Ott et al
14.37 °C, CRC HB Ch & Ph
14.2 °C, Fainberg et al
14.2 °C, Henne et al
14 °C, ESDU
13.5 — 14 °C, Miller et al

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
14.4 °C

Additional information

Melting point data at normal pressure have been published in several literature publications. The accessible and most relevant data are summarised here (more references are provided in the literature search). The values are between (13.5-14 °C) and 14.37 °C. The highest reported melting points are regarded as best reflecting the intrinsic melting point of the substance, as lower values likely reflect samples with greater levels of impurities. Ott et al is the most reliable study (14.37 °C). For this reason the given value (rounded to 14.4 °C) is considered the most appropriate data available and is selected as the key parameter and carried forward for risk assessment, and classification and labelling.


In accordance with Regulation (EC) No. 1907/2006, Annex XI, 1.2, the available data for melting point is considered to be adequate for the purposes of risk assessment, and classification and labelling, based on the weight-of-evidence.