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EC number: 200-469-3 | CAS number: 60-32-2
Boiling point
Administrative data
Link to relevant study record(s)
- Endpoint:
- boiling point
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Study period:
- 2017-06-30
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.2 (Boiling Temperature)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 103 (Boiling Point)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- method according to Siwoloboff
- Key result
- Atm. press.:
- 1 013.25 hPa
- Decomposition:
- yes
- Decomp. temp.:
- >= 204 °C
- Remarks on result:
- not determinable
- Conclusions:
- Based on the observations it was concluded that the test item started to decompose immediately after melting and no boiling point could be determined.
- Executive summary:
A study should be performed according to OECD TG 103 and Regulation (EC) No. 440/2008, method A.2 in order to determine the boiling point of the test item by using the Siwoloboff method. At 204 °C a small amount of the test item formed a light brown melt at the bottom of the sample, but most of it moved towards the upper part of the sample tube and hardened. Based on this observation, it was concluded that the test item started to decompose immediately after melting and the boiling point could not be determined.
Reference
Starting the measurement the aim was to find the temperature where the test item melted. At 204 °C a small amount of the test item formed a light brown melt at the bottom of the sample tube, but most of it moved towards the upper part of the sample tube and hardened.
Table 1: Observation
| Temperature (°C) |
Observation |
190 |
white solid, no change was observed |
195 |
slightly brown, solid |
198 |
light brown, solid |
200 |
light brown, solid |
202 |
light brown, solid |
204 |
small amount of light brown melt at the botton of the sample tube, most of the test item moved towards the upper part of the sample tube and hardened |
Description of key information
Based on the observations it was concluded that the test item started to decompose immediately after melting and no boiling point could be determined.
Key value for chemical safety assessment
Additional information
A study should be performed according to OECD TG 103 and Regulation (EC) No. 440/2008, method A.2 in order to determine the boiling point of the test item by using the Siwoloboff method. At 204 °C a small amount of the test item formed a light brown melt at the bottom of the sample, but most of it moved towards the upper part of the sample tube and hardened. Based on this observation, it was concluded that the test item started to decompose immediately after melting and the boiling point could not be determined (reference 4.3-1).
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