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Diss Factsheets

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:
2009-07-29 to 2010-04-19
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Deviations:
no
Qualifier:
according to guideline
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Deviations:
no
GLP compliance:
no
Type of method:
differential scanning calorimetry
Atm. press.:
>= 1 009 - <= 1 012 hPa
Decomposition:
yes
Decomp. temp.:
> 300 °C
Remarks on result:
other: based on DSC-measurement, performed under nitrogen

Thermal stability:

The DSC-measurement in a closed glass crucible with the test item showed an endothermic effect in the temperature range 180 °C to 290 °C (onset temperature 206.8 °C). A second endothermic effect has been observed in the temperature range 370 °C to 440 °C. No further effects were observed up to the maximum temperature of 500 °C.

Melting point (DSC):

Due to the optical inspection and the result of the capillary measurement it can be concluded that the test item had no melting point up to 600 °C. Up to 300 °C the test item remained unchanged. It is assumed that the mass loss occurs due to the release of any impurities (test substance purity is approx. 80%). Above a temperature of 300 °C the test item started to decompose.

Conclusions:
Under the described conditions the test item, cobalt oxalate, decomposes above a temperature of 300°C.

Description of key information

Cobalt oxalate decomposes at approximately 300 °C. No melting point can be determined.

Key value for chemical safety assessment

Additional information

Cobalt oxalate decomposes at approximately 300 °C. No melting point can be determined.