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Physical & Chemical properties

Boiling point

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Reference
Endpoint:
boiling point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2018-11-12
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 103 (Boiling Point)
Deviations:
no
Qualifier:
according to guideline
Guideline:
EU Method A.2 (Boiling Temperature)
Deviations:
no
GLP compliance:
no
Type of method:
differential scanning calorimetry
Key result
Boiling pt.:
370 °C
Atm. press.:
1 013.25 hPa
Decomposition:
yes
Decomp. temp.:
>= 370 °C

Boiling point / boiling range: Differential scanning calorimetry

The DSC measurement in an aluminium crucible with a hole showed a multistage endothermal effect after melting in the temperature range of 370 - 440'C. After the measurement the test item was a black residue. The mass loss after the DSC measurement amounted to 89 %.

 

DSC measurements

Test

item /

Starting
temperature /

°C

temperature/

°C

Temperature
range / °C

Crucible

Observations

after the
measurement

8.25

25

500

370 - 445
(endothermal)

Aluminium
with a hole

Test item was a
black residue
after the measurement;
mass loss: 89 %

Under consideration of the result from the DSC measurement it was concluded that the test item boiled under decomposition starting at approx. 370 °C.

Conclusions:
The test item boilied under decomposition starting at 370 °C at 1013.25 hPa.
Executive summary:

A study was conducted according to OECD TG 103 and Regulation (EC) No 440/2008 method A.2 to determine the boiling point of the test item using differential scanning calorimetry. The test item was weighed out into an aluminium crucible under an inert atmosphere (nitrogen). One test with about 8.25 mg of the test item was performed. As reference crucible, an empty aluminium crucible was used. The DSC measurement in aluminium crucibles with a hole showed an endothermal effect after the melting in the temperature range of 370 - 445 °C. No further endothermic or exothermic effects were observed up to the final temperature (500 °C). The mass loss after the DSC measurements amounted to 89 %. Under consideration of the result from the DSC measurement it was concluded that the test item boiled under decomposition starting at approx. 370 °C.

Description of key information

The test item boilied under decomposition starting at 370 °C at 1013.25 hPa.

Key value for chemical safety assessment

Additional information

A study was conducted according to OECD TG 103 and Regulation (EC) No 440/2008 method A.2 to determine the boiling point of the test item using differential scanning calorimetry (reference 4.3 -1). The test item was weighed out into an aluminium crucible under an inert atmosphere (nitrogen). One test with about 8.25 mg of the test item was performed. As reference crucible, an empty aluminium crucible was used. The DSC measurement in aluminium crucibles with a hole showed an endothermal effect after the melting in the temperature range of 370 - 445 °C. No further endothermic or exothermic effects were observed up to the final temperature (500 °C). The mass loss after the DSC measurements amounted to 89 %. Under consideration of the result from the DSC measurement it was concluded that the test item boiled under decomposition starting at approx. 370 °C.