Registration Dossier
Registration Dossier
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EC number: 272-221-2 | CAS number: 68784-12-3
Boiling point
Administrative data
Link to relevant study record(s)
- Endpoint:
- boiling point
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- other: OECD guideline 104
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- dynamic method
- Remarks on result:
- other: Due limited stability and a thermal change of the test substance a definite vapour pressure could not be determined.
- Conclusions:
- The boiling point of the test substance could not be determined, due to a limited stability and a thermal change.
- Executive summary:
No boiling could be determined by the dynamic vapor pressure measurement method according to OECD 103 since the substance shows a limited stability and a thermal change during heating.
Reference
Results:
| Temperature (°C) | Vapour pressure (hPa) | |
| measurement | calculation | |
| 189.13 | 1.01 | 1.002 |
| 202.55 | 2.01 | 2.036 |
| 210.68 | 3.01 | 3.024 |
| 221.72 | 5.02 | 4.989 |
| 229.73 | 7.02 | 7.007 |
| 238.33 | 9.97 | 9.889 |
| 257.8 | 20.03 | 20.147 |
The regression of the results leads with a mean deviation of 1.60% to the following equation:
ln(p/hPa) = 14.0032 - 3524.55/(62.16 + t/°C)
At a pressure of about 20 hPa, an unstable temperature was observed. Caused by the limited stability and a thermal change of the test substance a definite vapour pressure could not be determined.
Therefore the Normal Boiling Temperature cannot be determined. The test item is liquid in the temperature range used for the vapour pressure measurements.
Description of key information
The boiling point could not be determined.
Key value for chemical safety assessment
Additional information
No boiling could be determined by the dynamic vapor pressure measurement method according to OECD 103 since the substance shows a limited stability and a thermal change during heating.
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