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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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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Link to relevant study record(s)

Reference
Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Qualifier:
according to guideline
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Qualifier:
according to guideline
Guideline:
EPA OPPTS 830.7200 (Melting Point / Melting Range)
GLP compliance:
yes (incl. QA statement)
Type of method:
differential scanning calorimetry
Remarks on result:
other: The test item had no melting point in the temperature range of -100 °C to ambient temperature.

The measurements in aluminium crucibles with a hole showed no endothermal effect in the temperature range -50 to 400 °C and -100 to 400 °C, respectively. The onset temperature was derived from the intersection of the tangent line with the highest slope of the endothermal peak with the baseline. The test item had no melting point in the temperature range of -100 °C to ambient temperature.

Conclusions:
The test item had no melting point in the temperature range of -100 °C to ambient temperature.
Executive summary:

The melting point of the test item was determined according to the following guidelines: European Commission Regulation (EC) No. 440/2008, A 1. Melting point/ melting range, OECD test guidelines, OECD 102 (1995) Melting point/ melting range and US EPA Product Properties Test Guidelines OCSPP 830.7200.

In the first measurement, the test item was cooled down from ambient temperature to - 50 °C with a cooling rate of 10 K/min. When -50 °C have been reached, the samples were kept for 60 min at this temperature. Afterwards, they were heated up from -50 °C to 400 °C at a constant heating rate of 10 K/min.

In the second measurement, the test item was cooled down from ambient temperature to -100 °C with a cooling rate of 0.25 K/min. When - 100 °C have been reached, the samples were kept for 60 min at this temperature. Afterwards, they were heated up from -100 °C to 400 °C at a constant heating rate of 3 K/min.

Aluminium crucibles with a small hole were used as containers for the test item and as empty reference crucible.

The test item had no melting point in the temperature range of -100 °C to ambient temperature.

Description of key information

The melting point of the test item was determined according to the following guidelines: European Commission Regulation (EC) No. 440/2008, A 1. Melting point/ melting range, OECD test guidelines, OECD 102 (1995) Melting point/ melting range and US EPA Product Properties Test Guidelines OCSPP 830.7200.

In the first measurement, the test item was cooled down from ambient temperature to - 50 °C with a cooling rate of 10 K/min. When -50 °C have been reached, the samples were kept for 60 min at this temperature. Afterwards, they were heated up from -50 °C to 400 °C at a constant heating rate of 10 K/min.

In the second measurement, the test item was cooled down from ambient temperature to -100 °C with a cooling rate of 0.25 K/min. When - 100 °C have been reached, the samples were kept for 60 min at this temperature. Afterwards, they were heated up from -100 °C to 400 °C at a constant heating rate of 3 K/min.

Aluminium crucibles with a small hole were used as containers for the test item and as empty reference crucible.

The test item had no melting point in the temperature range of -100 °C to ambient temperature.

Key value for chemical safety assessment

Additional information