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Diss Factsheets

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
Study period:
11 Sept - 6 Nov 2002
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
test procedure in accordance with generally accepted scientific standards and described in sufficient detail
Qualifier:
according to guideline
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
other: thermal analysis and melt microscope
Specific details on test material used for the study:
SOURCE OF TEST MATERIAL
- Batch No.of test material: K100
- Sample no./year: 1069024/2002
- Purity: 98.7%
- Expiration date of the lot/batch: August 12, 2004
Key result
Melting / freezing pt.:
> 280 °C
Decomposition:
no
Conclusions:
The melting point of PFBSK+ is > 280 °C according to EU Method A.1.
Executive summary:

Under a melting point microscope, no liquidification up to a temperature of 280 °C could be observed. The study was conducted in accordance with EU Method A.1 and was GLP compliant; therefore the study is considered reliable without restrictions.

Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
supporting study
Reliability:
4 (not assignable)
Rationale for reliability incl. deficiencies:
documentation insufficient for assessment
Qualifier:
no guideline followed
GLP compliance:
no
Key result
Melting / freezing pt.:
270.4 °C
Conclusions:
The mean melting point for PFBSK+ is 270.4 °C.
Executive summary:

The mean melting point of 270.4 °C for PFBSK+ is 270.4 °C in an average of three determinations performed on three lots of the title compound. No further details were reported and no information about the pressure or method used was provided; therefore the reliability of the data is not assignable.

Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
supporting study
Reliability:
4 (not assignable)
Rationale for reliability incl. deficiencies:
documentation insufficient for assessment
Qualifier:
no guideline followed
GLP compliance:
no
Key result
Melting / freezing pt.:
>= 271 - <= 275 °C
Conclusions:
The melting point of PFBSK+ is 271 - 275 °C.
Executive summary:

The melting point of PFBSK+ is 271 - 275 °C. Only the result was available in the report and no information about the pressure or method used was provided; therefore the reliability of the data is not assignable.

Description of key information

The melting point of PFBSK+ is > 280 °C according to EU Method A.1.

Key value for chemical safety assessment

Additional information

Under a melting point microscope, no liquidification of PFBSK+ up to a temperature of 280 °C could be observed. The study was conducted in accordance with EU Method A.1 and was GLP compliant; therefore the study is considered reliable without restrictions. In two supporting studies, the melting point of PFBSK+ was determined to be 271 - 275 °C and 270.4 °C. The reports only included the result and no information about the pressure of method used were provided; therefore the reliability of the data is not assignable.