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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:
21 Mar - 28 Aug 2017
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Reference:
Composition 0
Qualifier:
according to
Guideline:
EU Method A.2 (Boiling Temperature)
Qualifier:
according to
Guideline:
OECD Guideline 103 (Boiling Point)
Version / remarks:
1995
Qualifier:
according to
Guideline:
EPA OPPTS 830.7220 (Boiling Point / Boiling Range)
Version / remarks:
1996
GLP compliance:
no
Type of method:
differential scanning calorimetry
Test material information:
Composition 1
Key result
Boiling pt.:
251.3 °C
Atm. press.:
1 013 hPa
Decomposition:
no

In the temperature range of -90 to -70 °C, a small endothermic effect (melting) was observed. Between approx. 60 - 280 °C a second endothermic effect (boiling) could be detected. No further thermal effects were observed up to the test end temperature of 500 °C.

 

Results of the DSC-measurements

No.

Sample weight / mg

Onset of Effect / °C

Range of effect / °C

Weight loss / mg

Atmospheric pressure / hPa

PN13074

14.95

-83.13

250.57

-90 to -70 (endo)

70 - 280 (endo)

14.85

1002.6

PN13308

14.65

-83.18

250.95

-90 to -70 (endo)

60 - 280 (endo)

14.64

1001.0

 

The test item showed an endothermic signal in the temperature range of approx. 60 - 280 °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. Ketone). A correction value φ = 5.05 was used for the temperature of 260 °C.

The lowest measured onset temperature is corrected to the standard pressure to be 251.04 °C and the highest onset temperature to be 251.50 °C. As the corrected onset temperatures in both tests deviate by less than 0.5 K from their mean value of 251.27 °C, the test item has a boiling point of 251.3 °C.

 

Final Results

The test item has a boiling point of 251.3 °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).

Conclusions:
A boiling point of 251.3 °C at 1013 hPa was determined for the test substance according to E.U. Method A.2.

Description of key information

Boiling point: 251.3 °C at 1013 hPa (EU Method A.2, differential scanning calorimetry)

Key value for chemical safety assessment

Boiling point at 101 325 Pa:
251.3 °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.