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EC number: 213-448-9 | CAS number: 950-33-4
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:
- 02-Sep-2014
- 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/boiling range)
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 830.7220 (Boiling Point / Boiling Range)
- GLP compliance:
- no
- Type of method:
- differential scanning calorimetry
- Boiling pt.:
- > 272 - < 274 °C
- Atm. press.:
- 1 013 hPa
- Conclusions:
- A boiling point of 272 to 274 °C (at 1013 hPa) was determined for the test substance according to E.U. Method A.2.
Reference
Results
In the thermograms of the two DSC runs (nos. PN7387 and PN7397) an endothermic (melting) effect was observed in the temperature range of - 10 °C to 25 °C. Between 155 - 310 °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) |
PN7387 |
11.67 |
7.04 274.02 |
-5 to 20 (endo) 160 to 310 (endo) |
11.55 |
1008.3 |
PN7397 |
10.59 |
6.83 272.18 |
-5 to 25 (endo) 160 to 320 (endo) |
10.59 |
1008.5 |
The test item showed a second distinct endothermic signal in the temperature range of 155 to 320 °C that can be associated with 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 (eg. Hydrocarbons). A correction value φ = 5.1 was used for the temperature range from 270 °C to 280 °C.
The lowest measured onset temperature is corrected to the standard pressure to be 272.40 °C and the highest onset temperature to be 274.25 °C. As the corrected onset temperatures in both tests deviate by less than 0.5 K from their mean value of 273.33 °C, the test item has a boiling range from 272 to 274 °C.
No further thermal effects were observed up to the test temperature of 500 °C.
Final Results
The test item [trade name] has a boiling point of 272 to 274 °C at atmospheric pressure (1013 hPa) as determined by differential scanning calorimetry according to Directive EC440/2008 Method A.2., OECD Test Guideline 103 (1995), EPA OCSPP 830.7220 (1998).
Description of key information
Boiling point: 272 to 274 °C at 1013 hPa (EU Method A.2, differential scanning calorimetry)
Key value for chemical safety assessment
Additional information
A boiling point of 272 to 274 °C (at 1013 hPa) was determined for the test substance according to E.U. Method A.2.
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