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EC number: 213-126-8 | CAS number: 925-83-7
Boiling point
Administrative data
- Endpoint:
- boiling point
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 06 August 2018 - 19 October 2018
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Cross-reference
- Reason / purpose for cross-reference:
- reference to same study
Reference
- Endpoint:
- melting point/freezing point
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 06 August 2018 - 19 October 2018
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Reason / purpose for cross-reference:
- reference to same study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Version / remarks:
- 2016
- 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:
- differential scanning calorimetry
- Key result
- Melting / freezing pt.:
- 190.8 °C
- Conclusions:
- The melting temperature of the substance was determined to be 190.8°C.
Two experiments were performed to investigate the melting and boiling behaviour of the substance.
DSC EXPERIMENT 1
An endothermic effect was observed between 150°C and 225°C followed by an exothermic effect starting at 225°C. The extrapolated onset temperature of the first effect was 190.887°C. The endothermic effect was most likely caused by melting of the test item. The exothermic effect was probably caused by reaction and/or decomposition of the test item (see endpoint 4.3).
DSC EXPERIMENT 2
In order to investigate the endothermic effect, in Experiment 2 heating was stopped directly after the melting effect. The extrapolated onset temperature was 190.681°C. After the experiment, a white molten residue remained in the sample container (original colour: white). It demonstrated that melting was the reason for the endothermic effect.
DATA HANDLING
The melting temperature was determined as the mean melting temperature of Experiment 1 (190.887°C) and Experiment 2 (190.681°C).
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 018
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.2 (Boiling Temperature)
- Version / remarks:
- 2016
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 103 (Boiling Point)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 830.7220 (Boiling Point / Boiling Range)
- Version / remarks:
- 1996
- Deviations:
- no
- GLP compliance:
- yes
- Type of method:
- differential scanning calorimetry
Test material
- Reference substance name:
- Sebacohydrazide
- EC Number:
- 213-126-8
- EC Name:
- Sebacohydrazide
- Cas Number:
- 925-83-7
- Molecular formula:
- C10H22N4O2
- IUPAC Name:
- sebacohydrazide
- Test material form:
- solid: particulate/powder
- Details on test material:
- Test item name (as stated in report): SDH
Test item storage: at room temperature protected from light
Constituent 1
Results and discussion
Boiling point
- Key result
- Decomposition:
- yes
- Decomp. temp.:
- >= 225 °C
Any other information on results incl. tables
Two experiments were performed to investigate the melting and boiling behaviour of the substance.
DSC EXPERIMENT 1
An endothermic effect was observed between 150°C and 225°C followed by an exothermic effect starting at 225°C. The first effect was ascribed to melting of the test item (see endpoint 4.2). The exothermic effect was probably caused by reaction and/or decomposition of the test item. After the experiment, a dark brown molten residue remained in the sample container (original colour: white). The change of the colour indicated reaction and/or decomposition of the test item. Based on this visual observation, it was concluded that the test item had molten and that the change of the colour demonstrated reaction and/or decomposition of the test item.
DSC EXPERIMENT 2
Performed in order to investigate the endothermic effect, see endpoint 4.2.
DATA HANDLING
Reaction and/or decomposition of the test item was observed in the DSC experiment at temperatures of > 225°C (> 498K) and confirmed by change of colour (after the experiment). Therefore the test item has no boiling temperature.
Applicant's summary and conclusion
- Conclusions:
- Boiling of the substance was not observed below the temperature at which reaction and/or decomposition started (i.e. at approx. 225°C).
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