Registration Dossier

Administrative data

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

Data source

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

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
other: Test instruction PA-570001-V04-DE
Deviations:
not applicable
Principles of method if other than guideline:
Investigations by differential scanning calorimetry (DSC) provide information on the thermal behavior of substances. Samples of the test substance and of a reference material are subjected to the same controlled temperature programme; they are heated in an oven at a constant heating rate, and the temperatur is measured in two containers. The difference in energy input necessary to maintain identical temperatures between the substance and the reference material is recorded. When the sample undergoes a phase transition, the corresponding change of enthalpy gives a departure form the base line of the heat flow record.
The DSC is mainly used as screening method for thermal stability analysis to determine the beginning of decomposition (onset temperature) and the heat of decomposition.
GLP compliance:
no
Type of method:
other: differential scanning calorimetry (DSC)

Test material

Reference
Name:
Unnamed
Type:
Constituent

Results and discussion

Melting / freezing point
Key result
Melting / freezing pt.:
-3.8 °C
Decomposition:
no
Sublimation:
no
Remarks on result:
other: Mean value of 2 measurements; melting onset = -8.5°C

Applicant's summary and conclusion

Conclusions:
Melting point = -3.8 °C DSC results (melting peak; onset = -8.5 °C)
Executive summary:

The melting point of the test substance has been determined to be -3.8 °C (melting peak; onset = -8.5 °C) by using differential scanning calorimetry (DSC).