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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:
from 2018-06-28- to 2019-02-07
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
OECD Guideline 103 (Boiling Point)
Version / remarks:
1995
Deviations:
no
Qualifier:
according to
Guideline:
EU Method A.2 (Boiling Temperature)
Version / remarks:
2008
Deviations:
no
GLP compliance:
yes (incl. certificate)
Type of method:
differential scanning calorimetry
Key result
Boiling pt.:
276.1 °C
Atm. press.:
1 013 hPa

Table 1: Results of the DSC-measurements

No.

Sample weight / mg

Onset of Effect / °C

Range of effect

l"C

Weight loss / mg

Atmospheric pressure / hPa

1

20.65

-40.58 282.89

-50 to -30 (endo) 270-410 (endo)

19.73 (96 %)

1004.6

2

28.27

-38.69 288.37

-40 to -30 (endo) 270-410 (endo)

27.88 (99 %)

1004.6

 

The test item showed a second very broad endothermic signal in the temperature range of 270 - 410 °C, which can't clearly be assigned to the boiling of the test item.

Thus the capillary method was performed. In one capillary, a boiling point of 275.6 °C was detected automatically by the apparatus. With correction for the air pressure (1002 mbar), the boiling point in the capillary method was 276.1 °C. After termination of the test at 276 °C the test item was darker as before.

Due to the fact that the BÜCH I Apparatus detected the boiling temperature very clearly, this temperature is used as boiling point of the test item.

No further thermal effects were observed up to the test end temperature of 500 °C.

Conclusions:
A boiling point of 276.1 °C at atmospheric pressure (1013 hPa) was determined.
Executive summary:

A boiling point of 276.1 °C at atmospheric pressure (1013 hPa) was determined by the capillary method according to Regulation EC No 440/2008 Method A.2. and OECD 103 (1995).

Description of key information

A boiling point of 276.1 °C at atmospheric pressure (1013 hPa) was determined.

Key value for chemical safety assessment

Boiling point at 101 325 Pa:
276.1 °C

Additional information

A key study was performed in order to determine the boiling point of the test substance. A boiling point of 276.1 °C at atmospheric pressure (1013 hPa) was determined by the capillary method according to Regulation EC No 440/2008 Method A.2. and OECD Test Guideline 103 (1995).