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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:
04.-07.07.2017
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
EU Method A.2 (Boiling Temperature)
Deviations:
no
Qualifier:
according to
Guideline:
OECD Guideline 103 (Boiling Point)
Deviations:
no
GLP compliance:
no
Type of method:
differential scanning calorimetry
Key result
Boiling pt.:
>= 403 - <= 405 °C
Atm. press.:
1 013 hPa
Decomposition:
no

Two DSC measurements in aluminium crucibles with a hole showed an endothermal effect after the melting in the temperature range below 164 °C. The onset temperature was derived from the intersection of the tangent line with the highest slope of the endothermal peak with the baseline. No further endothermic or exothermic effects were observed up to the final temperature (500 °C). The mass loss after the DSC measurements amounted to 100 %. Thus, the boiling point of the test item was determined to be in range from 403 to 405 °C.

Boiling point (DSC measurement

Ident
No.

Test
item /
mg

Starting
temperature/
°C

Final test
temperature/
°C

Temperature
range (endo-
thelial) /
°C

Onset
(boiling) /
°C

Crucible

Observations

after the
measurement

36351

7.34

25

500

390 - 450

403.4

Aluminium with a hole

Crucible empty

36355

7.64

25

500

385-450

404.5

Aluminium with a hole

Crucible empty

 

Conclusions:
The boiling point of the test item was determined to be in range from 403 to 405 °C.
Executive summary:

A study was conducted according to OECD test guideline 103, 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). Two tests with about 7 - 8 mg of the test item were performed. As reference crucible, an empty aluminium crucible was used. The test item and the reference were heated up from the starting temperature to the final temperature of 500 °C at a constant heating rate (10 K/min) in a defined atmosphere (nitrogen). Two DSC measurements in aluminium crucibles with a hole showed an endothermal effect after the melting in the temperature range below 164 °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 100 %. Thus, the boiling point of the test item was determined to be in range from 403 to 405 °C.

Description of key information

The boiling point of the test item was determined to be in range from 403 to 405 °C (reference 4.3 -1).

Key value for chemical safety assessment

Additional information

A study was conducted according to OECD test guideline 103, 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). Two tests with about 7 - 8 mg of the test item were performed. As reference crucible, an empty aluminium crucible was used. The test item and the reference were heated up from the starting temperature to the final temperature of 500 °C at a constant heating rate (10 K/min) in a defined atmosphere (nitrogen). Two DSC measurements in aluminium crucibles with a hole showed an endothermal effect after the melting in the temperature range below 164 °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 100 %. Thus, the boiling point of the test item was determined to be in range from 403 to 405 °C.