Registration Dossier
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EC number: 239-415-9 | CAS number: 15396-00-6
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:
- 2003-07-14 to 2003-07-15
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 103 (Boiling point/boiling range)
- Version / remarks:
- 27 July 1995
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.2 (Boiling Temperature)
- Version / remarks:
- December 1992
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- differential scanning calorimetry
- Key result
- Boiling pt.:
- 222.1 °C
- Atm. press.:
- 97.5 kPa
- Remarks on result:
- other: ± 2.4 °C
- Key result
- Boiling pt.:
- 495.3 K
- Atm. press.:
- 97.5 kPa
- Remarks on result:
- other: ± 2.4 K
- Conclusions:
- A boiling point value of 222.1 ± 2.4°C at 97.5 kPa was determined in a reliable study conducted according to an appropriate test protocol, and in compliance with GLP. The result is considered to be reliable.
Reference
The DSC curve of the preliminary test under nitrogen atmosphere (heating rate if 20 K/min from 25°C to 400°C) is shown in Figure 1 (attached). An endothermic heat effect, the boiling was observed at about 221.2°C. After the experiment, the sample had lost about 99% of its mass and the colour of the sample residue was yellow.
In order to determine the boiling point more precisely, further DSC runs were recorded between 150°C and 350°C with a heating rate of 5 K/min in a nitrogen atmosphere. In the first main test run, the boiling of the test item was detected at 220.3°C. During the second run, the boiling point was determined to be 224.8°C. During these runs, the samples lost 97% and 96% respectively of their mass. After the measurement, the sample residues were coloured yellow. The DSC curve of the first main test run in shown in Figure 2 attached.
The results are shown in the table below.
| Run No. | Heating range (°C) | Heating rate (K/min) | Boiling point (°C) | Boiling point (K) |
| Preliminary Test | 25 - 400 | 20 | 221.20 | 494.40 |
| 1st Main Test | 150 - 350 | 5 | 220.28 | 493.48 |
| 2nd Main Test | 150 - 350 | 5 | 224.79 | 497.99 |
| Mean of boiling point observed: | 222.1 ± 2 .4 | 495.3 ± 2.4 | ||
The boiling point was calculated from the "Onset point" of the endothermic peaks.
The mean boiling point was calculated from the bold values.
Description of key information
Boiling Point: 222.1°C at 97.5 kPa (OECD 103)
Key value for chemical safety assessment
- Boiling point at 101 325 Pa:
- 222.1 °C
Additional information
A measured boiling point of 222.1°C (495.3 K) at 97.5 kPa was determined for the substance according to OECD Test Guideline 103 and in compliance with GLP. The result is considered to be reliable and is selected as key study.
A limit value of >200°C was reported in a secondary source to which no reliability could be assigned.
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