Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Currently viewing:

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:
02/05/2018 - 28/05/2018
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
Qualifier:
according to guideline
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Deviations:
no
Qualifier:
according to guideline
Guideline:
EPA OPPTS 830.7200 (Melting Point / Melting Range)
Deviations:
no
GLP compliance:
yes
Type of method:
differential scanning calorimetry
Key result
Atm. press.:
ca. 1 atm
Decomposition:
yes
Decomp. temp.:
> 300 °C
Remarks on result:
not determinable

- Preliminary test: Starting at 350°C, the weight of the sample decreased significantly.  At 549°C, the sample weight had decreased by 23%. After the experiment, a white residue remained in the sample container (original colour: white to off-white).  The change of the colour indicated reaction and/or decomposition of the test item.

- Main study: An endothermic peak was observed between 25°C and 175°C.  Based on the weight loss observed during the preliminary test, the endothermic effect was due to evaporation of volatile components.  An endothermic peak was observed starting at 300°C.  The endothermic effect was due to reaction and/or decomposition of the test item. After the experiment, a white to off-white residue remained in the sample container.

Conclusions:
The test item has no melting temperature; it decomposes at temperatures > 300ºC.
Executive summary:

The study to determine the melting point of the test item was performed according to OECD 102 / EU Method A.1, under GLP conditions. A preliminary study was conducted using a thermogravimetric analyser (TGA). Based on the results, a differential scanning calorimetry study (DSC) was performed to determine the melting point of the test item. Reaction and/or decomposition of the test itemwas observed during DSC experiment at temperatures of > 300°C (> 573K). Melting and/or boiling of the test item was not observed below the temperature at which reaction and/or decomposition started. Based on this, the test item has no melting temperature.

Description of key information

Key study. Method according to OECD 102 / EU Method A.1, GLP study. The test item decomposes at about 300ºC.

Key value for chemical safety assessment

Additional information

Key study. Method according to OECD 102 / EU Method A.1, GLP study. A preliminary study was conducted using a thermogravimetric analyser (TGA). Based on the results, a differential scanning calorimetry study (DSC) was performed to determine the melting point of the test item. Reaction and/or decomposition of the test item was observed during DSC experiment at temperatures of > 300°C. Melting and/or boiling of the test item was not observed below the temperature at which reaction and/or decomposition started. Based on this, the test item has no melting temperature.