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:
2012
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
comparable to guideline study
Qualifier:
equivalent or similar to
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Deviations:
no
GLP compliance:
no
Type of method:
differential scanning calorimetry
Key result
Melting / freezing pt.:
ca. -56 °C
Remarks on result:
other: Upon heating, the test substance exhibited glass transition, therefore melting was not observed.
Remarks:
The glass transition region was observed at -56°C and the onset of exotherm was observed at 142°C

Results: DSC results (2 heating runs)

 

Sample #

Tg (HR1)°C

Tg (HR2)°C

Onset of exotherm°C

Ebecryl ®140

-56

-56

142

 

Conclusions:
Under the test conditions, di-TMPTTA exhibited glass transition, therefore melting was not observed. The glass transition temperature was evaluated as -56°C. Further, the onset of exotherm was observed at the temperature of 142°C.
Executive summary:

A study was conducted to evaluate the melting point of di-TMPTTA using differential scanning calorimeter (DSC). The study was equivalent or similar to the OECD Guideline 102. Under the test conditions the test substance exhibited glass transition, therefore melting was not observed. The glass transition temperature was evaluated as -56°C. Further, the onset of exotherm was observed at the temperature of 142°C (Jeuniaux, 2012).

Description of key information

Melting point was determined using differential scanning calorimetry (Jeuniaux, 2012).

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
-56 °C

Additional information

Glass transition temperature: -56°C (onset of exotherm at 142°C)