Registration Dossier
Registration Dossier
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EC number: 601-747-0 | CAS number: 120939-52-8
Boiling point
Administrative data
Link to relevant study record(s)
- Endpoint:
- boiling point
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 29-Sep to 26-Oct-2017
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 103 (Boiling Point)
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.2 (Boiling Temperature)
- GLP compliance:
- not specified
- Type of method:
- differential scanning calorimetry
- Boiling pt.:
- 238 °C
- Atm. press.:
- 1 013 hPa
- Conclusions:
- A boiling point value of 238 °C at 1013 hPa (with possible decomposition) was determined in a reliable study conducted according to an appropriate test protocol.
Reference
Preliminary thermogravimetric measurement:
Two steps were registered with maxima at 199 °C and 268 °C. A total mass loss of 99.8 % at the final temperature could be observed, considering the initial mass loss from purging (ca.1.0 % before the start of the measurement): Mass change in the range until 220 °C: 95.2 % (94.2 % + 1.0 %); mass change in the range from 220 to 600 °C: 4.6 %.
After cooling, a small light brown residue was discernible.
DSC measurements
Upon heating the heat flow curves show a sharp but noisy endothermic peak with a maximum temperature at 244 / 246 °C and an extrapolated onset temperature of 237 / 238 °C, indicating the boiling temperature. Reweighing after the measurement the sample had lost > 99 % of its mass. After cooling, no residue was discernible.
Appendix 1 to Test Report No. A170013402
|
extrapolated onset temperature [°C] |
boiling temperature [°C] at 1013 hPa |
First run |
237.25 |
237.58 |
Second run |
238.17 |
238.39 |
Mean value |
/ |
237.99 |
Remark:
The course of the thermogravimetric curve (two steps and a small residue), and the noisy DSC-signal suggests decomposition of the test item.
Normal boiling point: 238 °C (may be associated with decomposition.)
Description of key information
238 °C at 1013 hPa (Differential scanning calorimetry, EU method A.2)
Key value for chemical safety assessment
- Boiling point at 101 325 Pa:
- 238 °C
Additional information
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