Registration Dossier

Physical & Chemical properties

Melting point / freezing point

Currently viewing:

Administrative data

Link to relevant study record(s)

Reference
Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
September 3-25, 1998
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study with acceptable restrictions
Remarks:
Valid method according to company guideline/standard operating procedure
Principles of method if other than guideline:
Differential thermal analysis (DTA)
Type of method:
differential scanning calorimetry
Remarks:
DTA
Melting / freezing pt.:
306 °C
Decomposition:
yes
Decomp. temp.:
310 °C

The DTA shows an endothermal reaction with an onset at 306.15 °C (rounded value of 306°C taken as melting point) and a peak at 308.03 °C.

Decomposition starts from the melting substance. The (exothermal) decomposition reaction shows an onset at 309.77 °C (rounded value of 310 °C taken as decomposition temperature) and a peak at 318.56 °C, the decomposition energy was -580 J/g (mean from 2 measurements).

Executive summary:

The DTA recorded a melting point of 308°C and decomposition from the melting substance at an onset temperature of 310 °C. The decomposition energy is 580 J/g (mean of 2 measurements).

Description of key information

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
306 °C

Additional information