Registration Dossier

Diss Factsheets

Physical & Chemical properties

Melting point / freezing point

Currently viewing:

Administrative data

Link to relevant study record(s)

melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
according to guideline
OECD Guideline 102 (Melting point / Melting Range)
Version / remarks:
GLP compliance:
yes (incl. QA statement)
Type of method:
differential scanning calorimetry
Key result
Decomp. temp.:
> 166 °C

The substance was determined to decompose, without any evidence of melting, from approximately 166 °C (439 K). Decomposition was observed in both air and nitrogen atmospheres.

A melting temperature could not be determined due to thermal decomposition of the substance.
Executive summary:

The melting temperature of the substance was determined under GLP in a study conducted according to OECD TG 102, by differential scanning calorimetry. Aliquots of about 5 to 6 mg of the test substance were placed in aluminium crucibles with manually pierced lids. Two determinations were made in an air atmosphere and two determinations in a nitrogen atmosphere under atmospheric pressure. On thermal analysis, no evidence of a phase transition (melting) was observed in any determination. All thermogram profiles showed only a single exothermic thermal event, attributed to decomposition of the test substance, which started from approximately 166 °C.

Description of key information

A melting temperature could not be determined due to thermal decomposition of the substance, starting from about 166 °C.

Key value for chemical safety assessment

Additional information