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Diss Factsheets

Physical & Chemical properties

Melting point / freezing point

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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:
December 20, 2016
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
GLP compliance:
no
Type of method:
differential scanning calorimetry
Decomposition:
yes
Decomp. temp.:
>= 274 - <= 388 °C
Sublimation:
no

Endothermic event between 33 and 235 °C, with onset at 39 °C and enthalpy of -271 J/g.

Exothermic decomposition between 274 and 388 °C, with onset at 307 °C and enthalpy of 172 J/g.

Conclusions:
No melting is observed between 25 and 450 °C.
Executive summary:

Method

The test was performed according to OECD guideline 102, using Differential Scanning Calorimetry method for analysis.

Result

No melting was noted. An endothermic event was noted between 33 and 235 °C (onset at 39 °C, enthalpy -271 J/g), followed by an exothermic event between 274 and 388 °C (onset at 307 °C, enthalpy 172 J/g).

Description of key information

No melting point between 25 and 450 °C.  
Exothermic decomposition occurs between 274 and 388 °C with an energy release of 172 J/g.

Key value for chemical safety assessment

Additional information

Differential Scanning Calorimetry - OECD guideline 102.