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Boiling point

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Reference
Endpoint:
boiling point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
24-Aug-2015 to 25-Aug-2015
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
Key result
Boiling pt.:
218 °C
Atm. press.:
1 013 hPa

Results

In the thermograms of the DSC runs (nos. PN9485 and PN9486) no thermal effects were observed in the temperature range from -100 °C to 25 °C. Between approx. 60 and 240 °C an endothermic effect (boiling) could be detected.

No.

Sample weight / mg

Onset of Effect / °C

Range of effect / °C

Weight loss / mg

Atmospheric pressure / hPa

PN9485

13.24

216.82

60 – 240 (endo)

13.16

993.3

PN9486

11.71

217.62

60 – 240 (endo)

11.71

993.3

 

During the heating phase the test item showed an endothermic signal in the temperature range of approx. 60 – 240 °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 3 (e.g. Acetaldehyde). A correction value φ = 5.2 was used for the temperature of 210 – 220 °C.

The lowest measured onset temperature is corrected to the standard pressure to be 217.63 °C and the highest onset temperature to be 218.43 °C. As the corrected onset temperatures in both tests do not deviate by more than 0.5 K from their mean value of 218.03 °C, the test item has a boiling point of 218.0 °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 218 °C at atmospheric pressure (1013 hPa) as determined by differential scanning calorimetry according to Directive EC40/2008 Method A.2., OECD Test Guideline 103 (1995), EPA OCSPP 830.7220 (1998).

Conclusions:
A boiling point value of 218 °C (at 1013 hPa) was determined for the test substance according to E.U. Method A.2.

Description of key information

Boiling point: 218 °C at 1013 hPa (EU Method A.2. differential scanning calorimetry)

Key value for chemical safety assessment

Boiling point at 101 325 Pa:
218 °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.