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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:
From the 24th of June to the 3th of July, 2013
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Principles of method if other than guideline:
SOP-STR 028
Differential scanning calorimetry or DSC is a thermoanalytical technique in which the difference in the amount of heat required to increase the temperature of a sample and reference is measured as a function of temperature. Both the sample and reference are maintained at nearly the same temperature throughout the experiment. It can be used to measure a number of characteristic properties of a sample, in fact using this technique it is possible to observe fusion and crystallization events as well as glass transition temperatures Tg. DSC can also be used to study oxidation, decomposition as well as other chemical reactions.
GLP compliance:
not specified
Type of method:
thermal analysis
Remarks:
DSC- solid state
Decomposition:
yes
Decomp. temp.:
> 188 - < 297 °C

Water/solvent is release from 25 to 180 °C followed by a decomposition of the product between 188 - 297 °C (onset at 205.3 °C; enthalpy 62.6 J/g).

Conclusions:
Decomposition of the product between 188 - 297 °C
Executive summary:

Method

Differential Scanning Calorimetry (DSC) according to the OECD Test Guidelines 102 and 103.

Results

From 25 -180 °C water/solvent is released, followed by a decomposition of the product between 188 - 297 °C (onset at 205.3 °C; enthalpy 62.6 J/g).

Description of key information

Estimated value: 349.84 °C
Decomposition: 188 - 297 °C

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
349.84 °C

Additional information

Differential Scanning Calorimetry (DSC) according to the OECD Test Guidelines 102 and 103.