Registration Dossier

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:
From April 4, 2016 to April 14, 2016
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:
equivalent or similar to guideline
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Deviations:
no
GLP compliance:
not specified
Type of method:
differential scanning calorimetry
Specific details on test material used for the study:
Batch no.: 145
Appearance: white granular powder
Key result
Decomposition:
yes
Decomp. temp.:
238 °C
Remarks on result:
other: atmospheric pressure not specified

The test substance showed no melting of the main component up to 238°C according to the definition in the OECD guideline 102 (mean value for repeat determination).

239°C (from first measurement)

236°C (from second measurement)

240°C (from third measurement)

From 238°C, the test substance showed an exothermic effect (decomposition presumably; a melting >238°C can't be excluded).

In the third heating, the test substance showed an endothermic effect (possibly decomposition; no melting of main component).

Conclusions:
Under the study conditions, the substance showed no melting of the main component up to 238°C. From 238°C, the substance showed an exothermic effect with decomposition.
Executive summary:

A study was conducted to determine the melting point / freezing point of the susbtance according to OECD Guideline 102 and EU Method A.1. To determine the melting behaviour (three independent single measurements), the test substance was measured by differential scanning calorimetry (DSC) between -90°C and 350°C with a heating/cooling rate of 10 K/min in 4 cycles. For the measurement, a capsulated crucible was used. Under the study conditions, the substance showed no melting of the main component up to 238°C. From 238°C, the substance showed an exothermic effect with decomposition (Kintrup, 2016).

Description of key information

The melting point/freezing point was determined according to OECD Guideline 102 and EU Method A.1 (Kintrup, 2016)

Key value for chemical safety assessment

Additional information

Under the study conditions, the substance showed no melting of the main component up to 238°C. From 238°C, the substance showed an exothermic effect with decomposition.