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Physical & Chemical properties

Melting point / freezing point

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Reference
Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
16 Jun - 24 Jun 2014
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study with acceptable restrictions
Remarks:
TG/DTA-Test (non-GLP)
Qualifier:
according to guideline
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Principles of method if other than guideline:
- Principle of test: The melting temperature was measured by Differential Scanning Calorimetry.
- Short description of test conditions:
PC controlled DSC instrument (DSC 204 of Netzsch), calibrated with a set of certified standards
Balance (Mettler XP 205 DR)
Aluminum crucibles, pierced lid (Netzsch)
- Parameters analysed / observed: Thermic process
GLP compliance:
yes (incl. QA statement)
Remarks:
Landesamt für Umwelt, Wasserwirtschaft und Gewerbeaufsicht, Mainz
Type of method:
differential scanning calorimetry
Specific details on test material used for the study:
SOURCE OF TEST MATERIAL
- Batch No.of test material: NAV03052014

STABILITY AND STORAGE CONDITIONS OF TEST MATERIAL
- Storage condition of test material: Ambient temperature, humidity protection
Melting / freezing pt.:
> 600 °C
Remarks on result:
not determinable because of methodological limitations
Remarks:
The test item has no melting temperature between -20°C and 600°C.

A very weak endothermic maximum was observed at about 140°C (peak temperature, Test 1, 1st heating). This cannot be attributed to a melting, because this is too small and the material was powdery after the heating up to 600°C as before.

No other thermic process was observed.

Description of key information

The test item has a melting point > 600 °C (OECD 102, DSC).

Key value for chemical safety assessment

Additional information