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Physical & Chemical properties

Melting point / freezing point

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Reference
Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
17.8.2015
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
differential scanning calorimetry
Key result
Decomposition:
yes
Decomp. temp.:
> 175 °C
Conclusions:
The water evaporation was observed between start temperature and 175°C. The decomposition of the test substance started at the temperature 175°C. Any peaks correspond to the melting of the test substance were not observed to the temperature at which the thermal decomposition started.Melting temperature of the test substance, Reactive Blue 234, could not be determined because of thermal degradation of the test substance.
Executive summary:

The melting temperature of the test substance, Reactive Blue 234 was investigated. The Differential Scanning Calorimetry method was used.

Decomposition of the test substance was observed above 175°C, i.e. 448K. Melting of the test substance was not observed below the temperature at which decomposition started.

Melting temperature temperature of the test substance, Reactive Blue 234, could not be determined because of thermal degradation of the test substance.

Description of key information

The Differential Scanning Calorimetry method was used. Decomposition of the test substance was observed above 175°C, i.e. 448K. Melting of the test substance was not observed below the temperature at which decomposition started.

Melting temperature of the test substance, Reactive Blue 234, could not be determined because of thermal degradation of the test substance.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
175 °C

Additional information

(temperature of decomposition)