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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
weight of evidence
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
test procedure in accordance with generally accepted scientific standards and described in sufficient detail
Qualifier:
equivalent or similar to guideline
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Principles of method if other than guideline:
The melting point was determined using a precision adiabatic calorimeter.
Type of method:
other: precision adiabatic calorimeter
Key result
Melting / freezing pt.:
-44.192 °C
Atm. press.:
1 013.15 hPa
Decomposition:
no
Sublimation:
no
Conclusions:
The melting point of the test item was found to be -44.192 ± 0.014 °C at 1013.15 hPa.
Executive summary:

The melting point of the test item was determined in a reliable  peer reviewed publication, using a precision adiabatic calorimeter. The melting point of the distilled sample was found to be -44.192 ± 0.014 °C at 1013.15 hPa.

Description of key information

The melting point of the distilled sample was found to be -44.192 ± 0.014 °C at 1013.15 hPa.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
-44.192 °C

Additional information

The melting point of the test item was determined in a reliable peer reviewed publication, using a precision adiabatic calorimeter. The melting point of the distilled sample was found to be -44.192 ± 0.014 °C at 1013.15 hPa.


In another study, the freezing point of the test item was determined in a reliable peer reviewed publication. The freezing temperature was determined from the freezing curve. The freezing point of the test item was found to be -44.56 °C. No atmospheric pressure was reported.


Both publications present similar melting/freezing points around -44 °C. The value of -44.192 °C at 1013.15 hPa was used as key value.