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EC number: 696-026-0 | CAS number: 1395383-69-3
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:
- 28 November 2011- 03 February 2012
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: The study has been performed according to OECD and EC guidelines and according to the principles of GLP.
- 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
- GLP compliance:
- yes
- Type of method:
- thermal analysis
- Melting / freezing pt.:
- -46 °C
- Decomposition:
- yes
- Decomp. temp.:
- > 200 °C
- Remarks on result:
- other: glass transition
- Melting / freezing pt.:
- 228 K
- Decomposition:
- yes
- Decomp. temp.:
- > 473 K
- Remarks on result:
- other: glass transition
- Conclusions:
- The melting temperature (glass transition) of bis(2,3-epoxypropyl) cyclohexane-1,2-dicarboxylate is -46°C. Decomposition occurs at temperatures > 200°C.
Reference
Preliminary TGA:
From 300°C upwards the weight of the sample decreased significantly. At 351°C, the sample weight had decreased by 25%. After the experiment, brown residue was observed on the lid of the sample container and a brown residue remained in the sample container (original colour: colourless). The change of the colour indicated reaction and/or decomposition of the test substance. The TGA-curve of the test substance is shown in Figure 4 of the study report (see attached document).
DSC experiments:
During cooling, a glass transition was observed between -40°C and -75°C.
Experiment 1: During heating, a glass transition between -75°C and -25°C was observed. The inflection point of the glass transition (macroscopically equivalent to the melting point) of the test substance was -45.62°C. An exothermic peak was observed from 200°C. The effect was due to reaction and/or decomposition of the test substance. After the experiment, a yellow residue remained in the sample container. The change of the colour indicated reaction and/or decomposition of the test substance. DSC curve: Figure 5 (see attached document).
Experiment 2: Similar results to the first experiment were obtained. The inflection point of the glass transition was -45.50°C. After the experiment, the sample appeared to have been unchanged, i.e. no decomposition and/or evaporation were observed. DSC curve: Figure 6 (see attached document).
Description of key information
The melting temperature (glass transition) of bis(2,3-epoxypropyl) cyclohexane-1,2-dicarboxylate is -46°C.
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- -46 °C
Additional information
The melting temperature (glass transition) of bis(2,3-epoxypropyl) cyclohexane-1,2-dicarboxylate is -46°C. Decomposition occurs at temperatures > 200°C.
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