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EC number: 224-957-0 | CAS number: 4573-50-6
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:
- 22 April to 14 June 2016
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.2 (Boiling Temperature)
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 103 (Boiling Point)
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 830.7220 (Boiling Point / Boiling Range)
- GLP compliance:
- no
- Type of method:
- differential scanning calorimetry
- Key result
- Boiling pt.:
- 235 °C
- Atm. press.:
- 1 013.25 hPa
- Decomposition:
- no
- Conclusions:
- A boiling point of 235.0 °C (at 1013 hPa) was determined for the test substance according to EU Method A.2
Reference
Results
In the temperature range of -50 to -20 °C an endothermic effect (melting) was observed. Between approx. 120 - 260 °C a second endothermic effect (boiling) could be detected.
Results of the DSC-measurements
No. |
Sample weight [mg] |
Onset of Effect [°C] |
Range of effect [°C] |
Weight loss [mg] |
Atmospheric pressure [hPa] |
PN10938 |
15.74 |
-35.52 235.07 |
-50 to -20 (endo) 150 – 260 (endo) |
15.66 |
1012 |
PN11246 |
17.46 |
-32.43 233.86 |
-50 to -20 (endo) 120 – 260 (endo) |
17.38 |
987.3 |
During the cooling phase, an exothermal effect was observed in the temperature range of -60 to -70 °C, which can be assigned to the freezing of the test item. During the heating phase a distinct endothermic effect was observed in the temperature range of -50 to -20 °C, which can be assigned to the melting of the test item.
The test item showed a second endothermic signal in the temperature range of approx. 120 - 260 °C that can be assigned to the boiling of the test item.
For the correction of the boiling temperature to standard pressure the test item was assigned to chemical group 2 (e.g. Hydrocarbons). A correction value φ = 5.0 was used for the temperature of 230 - 240 °C.
The lowest measured onset temperature is corrected to the standard pressure to be 235.0 °C and the highest onset temperature to be 235.12 °C. As the corrected onset temperatures in both tests deviate less than 0.5 K from their mean value of 235.06 °C, the test item has a boiling point of 235.0 °C.
No further thermal effects were observed up to the maximum test temperature of 500 °C.
Final Results
The test item has a boiling point of 235.0 °C corrected to normal atmospheric pressure (1013 hPa) as determined by differential scanning calorimetry according to Regulation EC No. 440/2008 Method A.2. and OECD Test Guideline 103 (1995).
Description of key information
Boiling point: 235.0 °C at 1013 hPa (EU Method A.2, differential scanning calorimetry)
Key value for chemical safety assessment
- Boiling point at 101 325 Pa:
- 235 °C
Additional information
The boiling point has been corrected to normal pressure (1013.25 hPa) using the H.N. Hass and R.F. Newton equation.
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