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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
differential scanning calorimetry
Key result
Melting / freezing pt.:
< -100 °C
Atm. press.:
1 013 hPa
Decomposition:
no

The test item had no melting temperature between -100 °C and 50 °C.

A glass transition was found at -69 °C.

Conclusions:
The test item had no melting temperature between -100 °C and 50 °C. A glass transition was found at -69 °C.
Executive summary:

No melting temperature was found between -100 °C and 50 °C,

even by addition of aluminum oxide powder as crystallization aid

and annealing at -40 °C.

Description of key information

The test item had no melting temperature between -100 °C and 50 °C. A glass transition was found at -69 °C.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
-69 °C

Additional information