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Physical & Chemical properties

Melting point / freezing point

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melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
Experimental starting date: 03 January 2017 Experimental completion date: 10 June 2017
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
according to guideline
OECD Guideline 102 (Melting point / Melting Range)
according to guideline
EU Method A.1 (Melting / Freezing Temperature)
GLP compliance:
yes (incl. QA statement)
Type of method:
differential scanning calorimetry
Specific details on test material used for the study:
Appearance/Physical state: Amber colored gelatinous solid
Batch: E00268-014-212
Purity: 100%
Expiry date: 10 June 2018
Storage conditions: Room temperature in the dark
Sampling conditions: Heating to 50 to 80 °C was utilized to enable sampling of test item for some tests.
Key result
Melting / freezing pt.:
41.4 °C
Atm. press.:
> 92.4 - < 102.5 kPa
Decomp. temp.:
310 °C
Remarks on result:
other: The melting point of the test item has been determined to be 41.4 ± 0.5 °C (314.6 ± 0.5 K), boiling with decomposition from 310 °C (583 K) at 99.4 to 102.5 kPa.

Please see attached Thermogram's & Table 2 Thermographic data 

The melting point of the test item has been determined to be 41.4 ± 0.5 °C (314.6 ± 0.5 K), boiling with decomposition from 310 °C (583 K) at 99.4 to 102.5 kPa.
Executive summary:

Melting/Freezing Point. Was found to be 41.4 ± 0.5 °C (314.6 ± 0.5 K), by differential scanning calorimetry, designed to be compatible with Method A.1 Melting/Freezing Temperature of Commission Regulation (EC) No 440/2008 of 30 May 2008 and Method 102 of the OECD Guidelines for Testing of Chemicals, 27 July 1995

Description of key information

The melting point of the test item has been determined to be 41.4 ± 0.5 °C (314.6 ± 0.5 K), at 99.4 to 102.5 kPa.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
41.4 °C

Additional information

Determinations 1 to 4 used as preliminary testing for thermal program determinations, and as such were not used within the final melting and boiling point results.


Determinations 5 and 6, analysis under nitrogen, generated data used for classification of decomposition. As the thermographic profiles and residue weights obtained show inconsistent results, for unknown reasons, with the analysis carried out under air no classification can be concluded.


Melting point results were obtained from determinations 7 and 8, run at 1 °C/min as per the guidelines. Observations of the test item when subjected to heat, for sampling purposes, during the project showed that the test item softened between 50 and 80 °C, this temperature range corresponds with the larger endotherm within the determinations. As the test item is visually a solid at room temperature the two sub ambient thermal events are possibly the effect of supercooling on the polymer causing minor polymer changes as the test item warms.


Melting point at 41.4 ± 0.5 °C (314.6 ± 0.5 K).