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Diss Factsheets

Physical & Chemical properties

Melting point / freezing point

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Administrative data

Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
March 2014
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
test procedure in accordance with national standard methods with acceptable restrictions
Remarks:
Protocol similar to OECD Guideline 103 and EU Method A.2 but limited documentation.
Cross-reference
Reason / purpose for cross-reference:
reference to same study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2016
Report date:
2016

Materials and methods

Principles of method if other than guideline:
DSC analysis
GLP compliance:
no
Type of method:
differential scanning calorimetry

Test material

Constituent 1
Chemical structure
Reference substance name:
Lithium trifluoromethanesulphonate
EC Number:
251-528-5
EC Name:
Lithium trifluoromethanesulphonate
Cas Number:
33454-82-9
Molecular formula:
CHF3O3S.Li
IUPAC Name:
lithium trifluoromethanesulphonate
Test material form:
solid: particulate/powder
Details on test material:
See confidential details on test material

Results and discussion

Melting / freezing point
Key result
Melting / freezing pt.:
> 422 °C
Decomposition:
yes
Decomp. temp.:
422 °C
Remarks on result:
other:
Remarks:
The substance decomposes ate around 422°C before melting

Any other information on results incl. tables

A very small peak was observed from 134.8°C with a maximum at 138.6°C, associated to a very small endothermic decomposition of 19.85 J/g.

A second peak was observed from 410.3°C with a maximum at 422°C, associated to an endothermic decomposition of 110.2 J/g.

These peaks were not observed in the second heating run so they are associated to decomposition.

The DSC curve is available in the attached document.

Applicant's summary and conclusion

Conclusions:
Lithium Trifluoromethanesulfonate decomposes at 422°C before melting.
Executive summary:

The determination of the melting point of the test substance was performed by a differential scanning calorimetry but with a limited documentation.

The test item was placed in crucible and was heated up to 450°C (heating rate: 10°C/min).

According to the DSC results, Lithium Trifluoromethanesulfonate decomposes before melting at 422°C.