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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:
data from handbook or collection of data
Principles of method if other than guideline:
Not described
Type of method:
other: not detailed in handbook
Melting / freezing pt.:
1 777 °C
Conclusions:
According to the materials Handbook: A concise Desktop Reference the melting point of the substance is 1777°C.
Executive summary:

According to the materials Handbook: A concise Desktop Reference the melting point of the substance is 1777°C.

Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
supporting study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Qualifier:
according to guideline
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
GLP compliance:
yes (incl. QA statement)
Type of method:
other: DSC and capillary method as verfication.
Specific details on test material used for the study:
Batch C000363565
Remarks on result:
not determinable because of methodological limitations

The thermograms of the DSC runs PN19484 and PN19485 are shown in Figure 1 and Figure 2. The test item showed an endothermic effect in the temperature range of approx. 100 – 120 °C.

To verify the results of the DSC measurements, an additional measurement with the capillary method was performed in the temperature range of room temperature to 400 °C with a heating rate of 10 K/min in triplicate. No melting point could be observed during the measurement. At approx. 120 °C a liquid component was visible, which evaporated quickly after further heating. This observation can be brought into harmony with the endothermic effect of the DSC-measurement. A grey solid remained until the end of the measurement.

Combining the results of the DSC-measurement and the capillary method, no melting of the test item could be observed. The endothermic effect in the DSC can be assigned to evaporating components (e.g. water).

Conclusions:
The test item Ti3O5/Al2O3 Granulat 0.7-5mm has no melting point up to the maximum measuring temperature of 500 °C at atmospheric pressure (1011 hPa) as determined by Differential Scanning Calorimetry (DSC) and confirmed by the Capillary Method according to Regulation (EC) No 440/2008 Method A.1. and OECD Test Guideline 102 (1995).
Executive summary:

The test item Ti3O5/Al2O3 Granulat 0.7-5mm has no melting point up to the maximum measuring temperature of 500 °C at atmospheric pressure (1011 hPa) as determined by Differential Scanning Calorimetry (DSC) and confirmed by the Capillary Method according to Regulation (EC) No 440/2008 Method A.1. and OECD Test Guideline 102 (1995).

Description of key information

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
1 777 °C

Additional information