Registration Dossier

Physical & Chemical properties

Boiling point

Currently viewing:

Administrative data

Link to relevant study record(s)

Reference
Endpoint:
boiling point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
From 06 to 3 March 2018.
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Justification for type of information:
The study was conducted according to an internationally recognised method, and under GLP. The test substance is adequately characterised. Therefore full validation applies.
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
Principles of method if other than guideline:
Not applicable
GLP compliance:
yes (incl. certificate)
Remarks:
Inspected on 4,5 and 6 July 2016/ Signed on 10 January 2017
Type of method:
differential scanning calorimetry
Key result
Atm. press.:
101.3 kPa
Decomposition:
yes
Decomp. temp.:
ca. 267.1 °C

Results

All the raw data (calibration, pre-test and main tests) is in the experimental report.

Pre-study

The measurement was stopped at 380°C.

Temperature program:

Step

Initial temperature (°C)

Final Temperature (°C)

Heating rate (°C/min)

Duration (min)

Furnace atmosphere

Rate* (mL/min)

Liquid nitrogen cooling

1

-120

380

10

50

He

60

NO

2

380

280

10

10

He

60

YES

3

280

280

0

10

He

60

NO

4

380

550

10

17

He

60

NO

Test 1:

An exothermic peak was observed at 267.0 °C corresponds to the degradation of the substance and mass loss was observed on the TG curve. 

An endothermic peak was observed at 383.6 °C and a corresponding mass loss is observed on the TG curve, showing that all the substance was evaporated (including potential degradation compounds)at the end of the study.

 

The crucible was visually checked after the determination: By opening the crucible, no test item left in the crucible.

 

Atmospheric pressure: 974.0 hPa.

Test 2:

An exothermic peak was observed at 267.1 °C corresponds to the degradation of the substance and mass loss was observed on the TG curve. 

 

An endothermic peak was observed at 383.6 °C and a corresponding mass loss is observed on the TG curve, showing that all the substance was evaporated (including potential degradation compounds) at the end of the study.

 

The crucible was visually checked after the determination: By opening the crucible, no test item left in the crucible.

 

Atmospheric pressure: 974.0 hPa.

 

Remark: A peak corresponding to a glass transition was observed only during this determination.

Conclusion

An exothermic peak was observed at 267.1°C (mean of 267.0 °C for the first determination and 267.1 °C for the second determination) corresponds to the degradation of the substance and a mass loss was observed on the TG curve. An endothermic peak was determined at 383.6 °C (mean of 383.6 °C for the first determination and 383.6 °C for the second determination) and a mass loss was observed on the TG curve, showing that almost all the substance was evaporated (including potential degradation compounds) at the end of the study.

Conclusions:
The decomposition of the substance is determined at 267.1°C. No boiling point can be determined.
Executive summary:

The study was performed in order to determine the boiling point of test item according to OECD 103, resp. EU A.2, using the DSC method.

An exothermic peak was observed at 267.1°C (mean of 267.0 °C for the first determination and 267.1 °C for the second determination) corresponds to the degradation of the substance and a mass loss was observed on the TG curve.An endothermic peak was determined at 383.6 °C (mean of 383.6 °C for the first determination and 383.6 °C for the second determination) and a mass loss was observed on the TG curve, showing that almost all the substance was evaporated (including potential degradation compounds) at the end of the study.

Description of key information

The decomposition of the substance is determined at 267.1°C. No boiling point can be determined.

Key value for chemical safety assessment

Additional information

A fully reliable experimental study, conducted according to OECD 102/ EU A1 guideline is available.

It is considered as a key study.