Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

melting point/freezing point
Data waiving:
study technically not feasible
Justification for data waiving:

Description of key information

Performance of study not feasible.

Key value for chemical safety assessment

Additional information

In accordance with section 2 of REACH, Annex XI, the study does not need to be conducted as the test substance will not melt in the applicability range of EU Method A.1 (in production process melting point >1800 °C).

In the course of the industrial use the test item of the melting point was determined (reference 4.2 -2). The substance is used in an Electron beam evaporator at an evaporation temperature of 2200-2300 °C. Prerequisite to the evaporation step is the preparation of the base melt which requires thorough melting to avoid any remaining loose granules. This melting takes place above 1800 °C. This melting point is out if the applicability domain of the any method cited in the respective OECD or EU guidelines.