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Registration Dossier
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EC number: 202-393-6 | CAS number: 95-13-6
Boiling point
Administrative data
- Endpoint:
- boiling point
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- from 31 July 2018 to 06 September 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:
- from 31 July 2018 to 06 September 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.:
- -9.1 °C
- Atm. press.:
- >= 1 007 - <= 1 011 hPa
- Conclusions:
- The melting temperature of the substance was determined to be -9.1°C.
- Executive summary:
Differential Scanning Calorimetry was performed to determine the melting and boiling temperature. The experiments were based on EC A.1, OECD 102 and OPPTS 830.7200 (melting temperature) and on EC A.2, OECD TG 103 and OPPTS 830.722 (boiling temperature). Two endothermic effects appeared in the temperature range between -90°C and 400°C due to melting and boiling. The melting temperature of the substance was determined to be -9.1°C (mean extrapolated onset temperature of duplicate experiments). The boiling temperature of the substance (at 1009 ± 2 hPa ) was determined to be 181.5°C (mean extrapolated onset temperature of duplicate experiments).
DSC EXPERIMENT 1
During cooling: exothermic effect between -20°C and -40°C due to crystallization of the test item.
During heating: endothermic melting effect between -25°C and 0°C (extrapolated onset temperature: ‑9.225°C) followed by second endothermic effect between 150°C and 200°C (extrapolated onset temperature: 181.453°C). After the experiment it was observed that the test item had evaporated from the sample container. DSC curve: see illustration below.
DSC EXPERIMENT 2
In order to investigate the second endothermic effect, a higher heating rate of 50°C/minute was used. The extrapolated onset temperature of the second endothermic effect was 182.245°C. The effect had not shifted to higher temperatures. It demonstrated that boiling of the test item caused the second endothermic effect. After the experiment it was observed that the test item had evaporated from the sample container. Since a higher heating rate was used, the extrapolated onset temperature was not used in the calculation of the boiling point.
DSC EXPERIMENT 3
Similar results as in Experiment 1 were obtained. The extrapolated onset of the melting effect was -8.974°C. The extrapolated onset of the boiling effect was 181.483°C.
DATA HANDLING
Melting temperature: mean extrapolated onset temperature of Experiment 1 (-9.225°C) and Experiment 3 (-8.974°C).
Boiling temperature: mean extrapolated onset temperature of Experiment 1 (181.453°C) and Experiment 3 (181.483°C).
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 018
- Report date:
- 2018
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)
- Version / remarks:
- 1995
- 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:
- Indene
- EC Number:
- 202-393-6
- EC Name:
- Indene
- Cas Number:
- 95-13-6
- Molecular formula:
- C9H8
- IUPAC Name:
- indene
- Test material form:
- liquid
- Details on test material:
- Appereance: Colorless transparent liquid
Storage conditions: At room temperature container flushed with nitrogen
Constituent 1
Results and discussion
Boiling point
- Key result
- Boiling pt.:
- 181.5 °C
- Atm. press.:
- >= 1 007 - <= 1 011 hPa
Any other information on results incl. tables
see IUCLID 4.2 melting point
Applicant's summary and conclusion
- Conclusions:
- The boiling temperature of the substance was determined to be 181.5°C (at 1009 ± 2 hPa).
- Executive summary:
See IUCLID 4.2 Melting point
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