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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:
The study was conducted between 20 May 2018 and 24 July 2018
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
OECD Guideline 103 (Boiling Point)
Deviations:
no
Qualifier:
according to
Guideline:
EU Method A.2 (Boiling Temperature)
Deviations:
no
GLP compliance:
yes (incl. certificate)
Remarks:
Date of Inspection: 18 July 2017 - 20 July 2017 Date of Issue: 28 November 2017
Type of method:
differential scanning calorimetry
Specific details on test material used for the study:
SOURCE OF TEST MATERIAL
- Source and lot/batch No.of test material: 2955
- Expiration date of the lot/batch: 04 February 2019

STABILITY AND STORAGE CONDITIONS OF TEST MATERIAL
- Storage condition of test material: Room temperature, in the dark

Decomposition:
yes
Decomp. temp.:
ca. 313 °C
Remarks on result:
not determinable

The thermograms for Determinations 1 to 4 are shown in the attached background material document.

Thermographic data are shown in the below tables:

Table 3 Thermographic Data - Air Atmosphere

Thermal Event

Interpretations

Temperature (°C)

Determination 1

Determination 2

Wide endotherm

Onset of decomposition

~ 313

~ 312

Table 4 Thermographic Data - Nitrogen Atmosphere

Thermal Event

Interpretations

Temperature (°C)

Determination 1

Determination 2

Sharp endotherm

Onset of decomposition

~ 313

~ 312

Atmospheric pressure: 101.6 kPa

Overall result:

Decomposed from approximately 313 °C (586 K) at 101.6 kPa

As a result of the low rate of enthalpy change during the initial stage of decomposition, the onset temperature could only be approximated.

Non-similar thermographic profiles were obtained using air and nitrogen atmospheres; this would indicate that the test item decomposed with both thermal and oxidative processes

Conclusions:
The test item has been determined to decompose from approximately 313 °C (586 K) at 101.6 kPa. As the test item decomposed, no value for boiling point could be determined.
Executive summary:

The substance was found to decompose from approximately 313 °C (586 K) at 101.6 kPa, by differential scanning calorimetry, designed to be compatible with Method A.2 Boiling Temperature of Commission Regulation (EC) No 440/2008 of 30 May 2008 and Method 103 of the OECD Guidelines for Testing of Chemicals, 27 July 1995. As the test item decomposed, no value for boiling point could be determined.

Description of key information

The test item has been determined to decompose from approximately 313 °C (586 K) at 101.6 kPa. As the test item decomposed, no value for boiling point could be determined.

Key value for chemical safety assessment

Additional information

The substance was found to decompose from approximately 313 °C (586 K) at 101.6 kPa, by differential scanning calorimetry, designed to be compatible with Method A.2 Boiling Temperature of Commission Regulation (EC) No 440/2008 of 30 May 2008 and Method 103 of the OECD Guidelines for Testing of Chemicals, 27 July 1995. As the test item decomposed, no value for boiling point could be determined and therefore no key value is identified.