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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Reference
Endpoint:
melting point/freezing point
Type of information:
other: Company report on the production process
Adequacy of study:
weight of evidence
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Remarks:
The test is conducted in accordance with the procedure described in EU Regulation (EC) 440/2008, Annex Part A test A1.
Principles of method if other than guideline:
Production process
GLP compliance:
yes (incl. QA statement)
Type of method:
capillary method
Remarks:
The test was conducted in accordance with the procedure described in EU Regulation (EC) 440/2008, Annex Part A test A1.
Key result
Melting / freezing pt.:
> 350 °C
Conclusions:
The Substance has a melting point above 350 degrees C
Executive summary:

The Substance has a melting point above 350 degrees C

Description of key information

The Substance has a melting point above 350 degrees C

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
350 °C

Additional information

The melting point of triiorn tetraoxide, one of the major constituents, was 1597°C (Lide 2002). The other major constituent, Quartz, also has a very high melting point (above 1000 C) similar to diiron trioxide. The melting point of the other main constituent, the Feldspar-group of minerals, is above 1200°C.