Registration Dossier
Registration Dossier
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EC number: 200-386-2 | CAS number: 58-56-0
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:
- 04 December 2014-09 April 2015
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: GLP-compliant study in accordance with EC A.1, OECD 102 and EPA OPPTS 830.7200.
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Version / remarks:
- (2008)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Version / remarks:
- (1995)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 830.7200 (Melting Point / Melting Range)
- Version / remarks:
- (1998)
- Deviations:
- no
- GLP compliance:
- yes
- Type of method:
- thermal analysis
- Remarks:
- (differential scanning calorimetry (DSC))
- Melting / freezing pt.:
- 217 °C
- Decomposition:
- yes
- Remarks on result:
- other: Melt. pt.: 490 K. Decomposition was observed during and directly after melting.
- Conclusions:
- In a GLP-compliant study in accordance with EC A.1, OECD 102 and EPA OPPTS 830.7200 using differential scanning calorimetry, the melting temperature of the substance has been determined as 217°C. Decomposition started during melting.
Reference
TGA EXPERIMENT
From 225°C upwards the weight of the sample decreased significantly. At 327°C the sample weight had decreased by 25%. After the experiment, a black molten expanded residue remained in the sample container
DSC EXPERIMENTS
Experiment 1: An endothermic peak between 200°C and 250°C followed by an exothermic effect was observed. The extrapolated onset temperature of the peak was 217.28°C. The exothermic effect and increased baseline were related to reaction and/or decomposition of the test substance. After the experiment, a molten expanded black residue remained in the sample container.
Experiment 2: To investigate the melting peak, the temperature program of this experiment was stopped directly after melting. The extrapolated onset temperature of the melting peak was 216.79°C. After the experiment, a black molten residue remained in the sample container. It demonstrated that the test substance reacts and/or decomposes during melting.
The melting temperature of the test substance was determined as the average melting temperature obtained from Experiment 1 (217.28°C) and Experiment 2 (216.79°C).
Description of key information
In a GLP-compliant study in accordance with EC A.1, OECD 102 and EPA OPPTS 830.7200 using differential scanning calorimetry, the melting temperature of the substance has been determined as 217°C. Decomposition started during melting.
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- 217 °C
Additional information
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