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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:
04 to 05 August 2016
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)
Qualifier:
according to
Guideline:
EPA OPPTS 830.7220 (Boiling Point / Boiling Range)
GLP compliance:
no
Type of method:
differential scanning calorimetry
Key result
Boiling pt.:
>= 285 - <= 289 °C
Atm. press.:
1 013.25 hPa

Results

In the temperature range of 170 – 320 °C an endothermic effect (boiling) was observed. 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

PN11528

16.50

285.23

210 – 320 (endo)

16.50

1000.6

PN11535

16.06

289.01

170 – 320 (endo)

16.06

1009.9

 

During the heating phase the test item showed an endothermic signal in the temperature range of approx. 170 – 320 °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 3 (e.g. Esters). A correction value φ = 5.35 was used for the temperature of 280 – 290 °C.

The lowest measured onset temperature is corrected to the standard pressure to be 285.79 °C and the highest onset temperature to be 289.16 °C. As the corrected onset temperatures in both tests deviate more than 0.5 K from their mean value of 287.48 °C, the test item has a boiling range of 285 – 289 °C.

 

Final Results

The test item has a boiling range of 285 – 289 °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 range of 285 - 289 °C (at 1013 hPa) was determined for the test substance according to EU Method A.2

Description of key information

Boiling range: 285 - 289 °C at 1013 hPa (EU Method A.2, differential scanning calorimetry)

Key value for chemical safety assessment

Additional information

The boiling point has been corrected to normal pressure (1013.25 hPa) using the H.N. Hass and R.F. Newton equation.