Registration Dossier
Registration Dossier
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EC number: 203-385-5 | CAS number: 106-32-1
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:
- 2016-03-22 to 2016-03-23
- 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:
- OECD Guideline 103 (Boiling Point)
- Version / remarks:
- 1995
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.2 (Boiling Temperature)
- Deviations:
- no
- GLP compliance:
- no
- Type of method:
- differential scanning calorimetry
- Key result
- Boiling pt.:
- 207.2 °C
- Atm. press.:
- 1 013 hPa
- Remarks on result:
- other: corrected to normal atmospheric pressure; mean of 2 replicates
- Conclusions:
- The boiling point of the test item is 207.2°C at normal atmospheric pressure.
- Executive summary:
The boiling point of the test substance was determined according to OECD 103, differential scanning calorimetry. The mean boiling temperature is 207.2°C corrected to normal atmospheric pressure (1013 hPa).
Reference
During the heating phase, two endothermic effects were observed. The first one, at ca. -44°C, is associated with the melting of the substance.
Between approx. 150–220 °C a second endothermic effect (boiling) could be detected.
The results of the DSC measurements:
| Sample weight (mg) | Onset of effect (°C) | Range of effect (°C) | Weight loss (mg) | Atmospheric pressure (hPa) |
| 12.26 | 206.60 | 150-220 (endo) | 12.19 | 1002.2 |
| 14.89 | 206.93 | 150-220 (endo) | 14.85 | 1003 |
For the correction of the boiling temperature to standard pressure the test item was assigned to chemical group 3 (e.g. Esters). According to appendix 8.2 a correction value φ= 5.2 was used for the temperature of 200–210 °C.
The lowest measured onset temperature is corrected to the standard pressure to be 207.04 °C and the highest onset temperature to be 207.34 °C. As the corrected onset temperatures in both tests deviate less than 0.5 K from their mean value of 207.19 °C, the test item has a boiling point of 207.2 °C.
Description of key information
For this endpoint the boiling point has been determined experimentally according to OECD 103, by differential scanning calorimetry. The boiling point was found to be 207.2 °C, corrected to a normal atmospheric pressure (1013 hPa). This is in close correspondance with the reported boiling point of 208.5 °C according to CRC Handbook (1993).
Key value for chemical safety assessment
- Boiling point at 101 325 Pa:
- 207.2 °C
Additional information
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