Registration Dossier

Diss Factsheets

Physical & Chemical properties

Melting point / freezing point

Currently viewing:

Administrative data

Link to relevant study record(s)

Reference
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:
comparable to guideline study with acceptable restrictions
Remarks:
purity, expiry date, batch number were not stated; accuracy was ± 5 °C instead of ± 2.0 °C
Qualifier:
equivalent or similar to guideline
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Version / remarks:
1995
Deviations:
yes
Remarks:
purity, expiry date, batch number were not stated; accuracy was ± 5 °C instead of ± 2.0 °C
GLP compliance:
not specified
Type of method:
thermal analysis
Decomposition:
yes
Decomp. temp.:
745 °C
Sublimation:
no

The verification of the Al2O3 -V2O5 phase diagram has proved that at the content of ~8 mol % Al2O3 and ~92 mol % V2O5, the components heated to ~ 640 °C form a eutectic: AlVO4 + V2O5. AlVO4 melts incongruently at 745 °C, releasing the solid α-Al2O3.

Conclusions:
Aluminium vanadium tetraoxide melts incongruently at 745 °C, releasing the solid α-Al2O3.

Description of key information

Aluminium vanadium tetraoxide melts incongruently at 745°C.

Key value for chemical safety assessment

Additional information

Categories Display