Registration Dossier
Registration Dossier
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EC number: - | CAS number: -
Melting point / freezing point
Administrative data
Link to relevant study record(s)
- 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:
- equivalent or similar to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Deviations:
- no
- GLP compliance:
- not specified
- Type of method:
- differential scanning calorimetry
- Specific details on test material used for the study:
- Batch 145
Appearance white granular powder - Key result
- Decomposition:
- yes
- Decomp. temp.:
- 238 °C
- Remarks on result:
- other: atmospheric pressure not specified
- 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).
Reference
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).
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
- Melting / freezing point at 101 325 Pa:
- 238 °C
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.
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