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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:
25 October to 15 November 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.:
212.2 °C
Atm. press.:
1 013 hPa
Decomposition:
no

Results

In the temperature range of -70 to -40 °C, a very small endothermic effect (melting) was observed. Between approx. 110 - 230 °C a second 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

PN12107

15.33

-69.51

212.11

-70 to -40 (endo)

110 - 230 (endo)

15.33

1007.3

PN12122

14.91

-69.50

212.10

-70 to -40 (endo)

120 - 230 (endo)

14.86

1015.2

 

During the cooling phase, no thermal effects were observed in the temperature range from -100 to 25 °C. During the subsequent heating phase the test item showed a very small endothermic effect in the temperature range of -70 to -40 °C, which can be assigned with the melting of the test item.

The test item showed a second endothermic signal in the temperature range of approx. 110 - 230 °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. Hydrocarbons). A correction value φ = 5.0 was used for the temperature of 210 - 220 °C.

The lowest measured onset temperature is corrected to the standard pressure to be 212.02 °C and the highest onset temperature to be 212.36 °C. As the corrected onset temperatures in both tests deviate less than 0.5 K from their mean value of 212.19 °C, the test item has a boiling point of 212.2 °C.

 

Final Results

The test item has a boiling point of 212.2 °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 212.2 °C (at 1013 hPa) was determined for the test substance according to EU Method A.2

Description of key information

Boiling point: 212.2 °C at 1013 hPa (EU Method A.2, differential scanning calorimetry)

Key value for chemical safety assessment

Boiling point at 101 325 Pa:
212.2 °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.