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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:
19 January 2017
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
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
Key result
Boiling pt.:
270 °C
Atm. press.:
1 013.25 hPa
Decomposition:
no

Results

In the temperature range of 70 - 90 °C an endothermic effect (melting), was observed. Between approx. 170 - 290 °C a second endothermic effect (boiling) could be detected. The results are reported in the following table. No further thermal effects were observed up to the maximum test temperature of 500 °C.

 

No.

Sample weight / mg

Onset of Effect / °C

Range of effect / °C

Weight loss / mg

Atmospheric pressure / hPa

PN12654

16.34

70.43

270.41

70 - 90 (endo)

170 - 290 (endo)

16.04

1024.0

PN12655

17.90

70.96

270.56

70 - 90 (endo)

180 - 290 (endo)

17.68

1024.0

 

The test item showed an endothermic signal in the temperature range of approx. 170 - 290 °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 = 5.1 was used for the temperature of 270 °C.

The lowest measured onset temperature is corrected to the standard pressure to be 269.92 °C and the highest onset temperature to be 270.07 °C. As the corrected onset temperatures in both tests deviate by less than 0.5 K from their mean value of 270.00 °C, the test item has a boiling point of 270.0 °C.

 

Final Results

The test item has a boiling point of 270.0 °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).

Executive summary:

A boiling point of 270.0 °C (at 1013 hPa) was determined for the test substance according to EU Method A.2.

Description of key information

Boiling point: 270.0 °C at 1013 hPa (EU Method A.2., differential scanning calorimetry)

Key value for chemical safety assessment

Boiling point at 101 325 Pa:
270 °C

Additional information