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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
experimental study
Adequacy of study:
key study
Study period:
2013-10-16
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study with acceptable restrictions
Remarks:
The study was conducted according to an appropriate OECD test guideline and under the quality standard of ISO 9001:2008.
Qualifier:
according to guideline
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Deviations:
no
Qualifier:
according to guideline
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Deviations:
no
GLP compliance:
no
Other quality assurance:
other: ISO 9001:2008
Type of method:
thermal analysis
Remarks:
Differential Scanning Calorimetry (DSC)
Key result
Melting / freezing pt.:
< -130 °C
Atm. press.:
1 013 hPa
Decomposition:
no

The DSC diagrams show no freezing temperature (no exothermic peak, red line) respectively melting temperature (no endothermic peak, blue line) which is higher than –130 °C (143 K). See attached thermograms.

Conclusions:
A melting temperature of <-130°C at 1013 hPa was determined for the substance using a relevant test method and in compliance with ISO 9001:2008.

Description of key information

Melting point <-130 °C at 1013 hPa (OECD 102)

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
-130 °C

Additional information

A measured melting temperature of <-130°C at 1013 hPa was determined for the substance using differential scanning calorimetry (DSC) in accordance with OECD Test Guideline 102 and in compliance with a known quality system (ISO 9001;2008). The result is considered to be reliable and is selected as key study.

This is supported by melting point values of -59°C and <-100°C at 1013 hPa which were obtained from handbooks which have been subject to peer review in which the original sources are traceable.