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Diss Factsheets

Physical & Chemical properties

Melting point / freezing point

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Administrative data

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Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2009-07-30 to 2009-09-01
Reliability:
1 (reliable without restriction)
Reason / purpose for cross-reference:
reference to other study
Qualifier:
according to guideline
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Version / remarks:
1995
Deviations:
no
Qualifier:
according to guideline
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Version / remarks:
1992
Deviations:
no
GLP compliance:
no
Type of method:
other: differential scanning calorimetry
Key result
Melting / freezing pt.:
722 °C
Atm. press.:
1 013.25 hPa
Conclusions:
The determination of the melting point was performed according to EU guideline A.1 and OECD 102 by applying the differential scanning calorimetry. The melting point of lithium carbonate was determined to be 722 °C at 1013.25 hPa.
Executive summary:

The determination of the melting point was performed according to EU guideline A.1 and OECD 102 by applying the differential scanning calorimetry. The heat flow curves showed one sharp endothermic peak with a peak maximum temperature at 735 °C and an extrapolated onset temperature of 722 °C indicating the melting temperature at ambient pressure. Reweighing after the measurement the sample had lost approx. 3-4 % of its mass. The melting point of lithium carbonate was determined to be 722 °C at 1013.25 hPa.

Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
supporting study
Study period:
2007 - 2008
Reliability:
4 (not assignable)
Rationale for reliability incl. deficiencies:
data from handbook or collection of data
Qualifier:
no guideline followed
Principles of method if other than guideline:
Handbook data only. No guideline or method indicated.
GLP compliance:
not specified
Type of method:
other: no data
Key result
Melting / freezing pt.:
723 °C
Atm. press.:
1 013.25 hPa
Decomposition:
yes
Decomp. temp.:
1 300 °C
Conclusions:
Melting temperature: 723 °C
Decomposition temperature: 1300 °C
Executive summary:

According to the handbook-data lithium carbonate has a melting point of 723 °C and it decomposes at 1300 °C.

Description of key information

The melting point of lithium carbonate was determined to be 722 °C. 

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
722 °C

Additional information

The determination of the melting point was performed according to EU guideline A.1 and OECD 102 by applying the differential scanning calorimetry. The melting point of lithium carbonate was determined to be 722 °C at 101 325 Pa. Handbook-data reveal identical / similar results.