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Physical & Chemical properties

Melting point / freezing point

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Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Standard methods without GLP are reported.
Qualifier:
no guideline followed
Principles of method if other than guideline:
3 tests were applied:
- Test according to Lütolf in an open vessel. Temperature raise at 2.5 °C/min until 350 °C.
- Test in Radex (rapid detector of exothermic processes) in an open vessel. Temperature raise until 150 °C. Exposure time at 150 °C: 16 h.
- Test according to Grewer in air stream. Temperature raise at 1.2 °C/min until 350 °C.
GLP compliance:
not specified
Type of method:
thermal analysis
Melting / freezing pt.:
°C
Decomp. temp.:
ca. 193 °C
Remarks on result:
other: The test substance undergoes an exothermic process (decomposition) starting at ca. 181 °C with a peak at 192 - 195 °C.

- Test for decomposition according to Lütolf dynamic in an open vessel. Result: First exothermic process at 190 - 350 °C. Peak: 195 °C. dTmax 28 °C.

- Test in Radex (rapid detector of exothermic processes) in an open vessel. Result: No exothermic process up to 150 °C (for 16 h).

- Test for decomposition dynamic according to Grewer in air stream. Result: First exothermic process at 181 - 209 °C. Peak at 192 °C. dTmax 56 °C.

Conclusions:
The test substance undergoes an exothermic process (decomposition) starting at ca. 181 °C with a peak at 192 - 195 °C.
Executive summary:

Three tests were performed:

- Test for decomposition according to Lütolf dynamic in an open vessel. Result: First exothermic process at 190 - 350 °C. Peak: 195 °C. dTmax 28 °C.

- Test in Radex (rapid detector of exothermic processes) in an open vessel. Result: No exothermic process up to 150 °C (for 16 h).

- Test for decomposition dynamic according to Grewer in air stream. Result: First exothermic process at 181 - 209 °C. Peak at 192 °C. dTmax 56 °C.

Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2016
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Version / remarks:
1995
Deviations:
not specified
Qualifier:
according to
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Version / remarks:
2008
Deviations:
not specified
Qualifier:
according to
Guideline:
EPA OPPTS 830.7200 (Melting Point / Melting Range)
Version / remarks:
1998
Deviations:
not specified
GLP compliance:
yes (incl. certificate)
Type of method:
capillary method
Key result
Melting / freezing pt.:
> 375 °C
Decomposition:
yes
Decomp. temp.:
>= 180 °C
Sublimation:
no
Conclusions:
Melting of the test item was not detected up to 375 °C.
Test item decomposes above 180°C.
Executive summary:

The test item was investigated using the capillary method.

Melting of the test item was not detected up to 375 °C. The test item decomposes above 180°C.

Description of key information

The test substance undergoes an exothermic process (decomposition) starting at ca. 180 °C with a peak at 192 - 195 °C.

The melting temperature was calculated to 339 °C by the MPBPVP v1.43 programme.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
339 °C

Additional information