[No public or meaningful name is available]

Boiling point

Link to relevant study record(s)

Reference

Endpoint:

boiling point

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2019-2020

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

OECD Guideline 103 (Boiling Point)

Version / remarks:

1995

Deviations:

no

Qualifier:

according to guideline

Guideline:

EU Method A.2 (Boiling Temperature)

Version / remarks:

2008

Deviations:

no

Principles of method if other than guideline:

Not applicable.

GLP compliance:

yes (incl. QA statement)

Remarks:

Inspected on 15-16/11/2017, Signed on 15/05/2018

Type of method:

differential scanning calorimetry

Key result

Boiling pt.:

> 291.39 - < 409.17 °C

Atm. press.:

98.7 kPa

Decomposition:

no

Finding

Pre-Tests

Pre-Test Boiling Point metal block

All observations are presented in the following table. All observations were made on the surface due the dark colour of the test item.

Pre-test metal block

Observations	Temperatures in °C
Small bubbles visible on surface	100
More Bubbles visible on surface	115
More bubbling	Since 120
Boiling on the surface	130
Boiling, gas burner turned off	140

 

After cooling down the appearance of the test item was visually unchanged.

Pre-test DSC

Second Event	Begin	287.64	19.72 mW
	End	401.83	16.77 mW
	Peak max. (onset)	360.43	-
	Onset	359.06	49.32 J/g

Test Method following DSC (Main Test)

Results DSC Main Test-second event

Second Event	in °C	in K
First determination
Onset	357.79	630.94
Range
From	306.79	579.94
to	395.04	668.19
Peak Maximum	369.15	642.30
Third determination
Onset	354.65	627.80
Range
From	291.39	564.54
to	409.17	682.32
Peak Maximum	363.16	636.31
Onset
Min	354.65	627.80
Max	357.79	630.94
Range
Min	291.39	564.54
Max	409.17	682.32
Peak Maximum Max	369.15	642.30

In all three determinations two main events could be detected. The first event can be a condensation and was evaluated as mean of the peak max value.

A turbulent baseline was observed after the first event since 100 °C. The turbulent behaviour might be cause through the boiling behaviour of the single components of the test item.

The second event represents the boiling range of the major fraction. During the first and second determinations strong superheating occurred visible by the sharp peaks. Therefore, the second result of the second determination cannot taken for evaluation.

Only the values of the first and third determination was taken. The boiling point was evaluated as maximum value of the Peak Maximum.

Discussion

A boiling point was determined under these circumstances as the maximum value of the Peak Maximum of the second endothermic event with: 369.15 °C (642.30 K).

 

The range of the event was detected with: 291.39 °C to 409.17 °C (564.54 K to 682.32 K). It can be supposed that the major fraction boils in this range.

These values are the results from two independent determinations. No observations were made which might cause doubts on the validity of the study outcome. Therefore, the result of the study is considered valid.

Conclusions:

The range of the event was detected with:
291.39 °C to 409.17 °C (564.54 K to 682.32 K)
It can be supposed that the major fraction boils in this range.

Executive summary:

An experimental study, conducted in accordance with conditions recommended in OECD guideline and under GLP was performed. The boiling point was determined via DSC (differential scanning calorimetry). A boiling point was determined under these circumstances as the maximum value of the Peak Maximum of the second endothermic event with: 369.15 °C (642.30 K). The range of the event was detected with: 291.39 °C to 409.17 °C (564.54 K to 682.32 K). 

It can be supposed that the major fraction boils in this range.

These values are the results from two independent determinations.

No observations were made which might cause doubts on the validity of the study outcome. Therefore, the result of the study is considered valid.

Description of key information

The range of the event was detected with:

291.39 °C to 409.17 °C (564.54 K to 682.32 K)

It can be supposed that the major fraction boils in this range.

Additional information

An experimental study, conducted in accordance with conditions recommended in OECD guideline and under GLP was performed.The boiling point was determined via DSC (differential scanning calorimetry). A boiling point was determined under these circumstances as the maximum value of the Peak Maximum of the second endothermic event with: 369.15 °C (642.30 K). The range of the event was detected with: 291.39 °C to 409.17 °C (564.54 K to 682.32 K). 

It can be supposed that the major fraction boils in this range.

These values are the results from two independent determinations.

No observations were made which might cause doubts on the validity of the study outcome. Therefore, the result of the study is considered valid and key data.