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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:
7.8.2015
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:
thermal analysis
Remarks:
differential scanning calorimetry method
Key result
Atm. press.:
99 kPa
Decomposition:
yes
Decomp. temp.:
200 °C
Conclusions:
The water evaporation was observed between start temperature and 200°C, after that the decomposition of the test substance started.
Any peaks correspond to the melting of the test substance was not observed to the temperature at whitch the thermal decomposition started.
Executive summary:

The melting temperature of the testsubstance Reactive Red 45:1 was investigated.

The Differential Scanning Calorimetry method was used.

Decomposition of the test substance was observed above 200°C, i.e. 473K.

Melting of the test substance was not observed below the temperature at which decomposition started.

Melting temperature of the test substance Reactive Red 45:1, could not be determined because of thermal degradation of the test substance.

Description of key information

Melting temperature of the test substance e determined because of thermal degradation of the test substance, which started at 200°C.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
200 °C

Additional information

The melting temperature of the test substance Reactive Red 45:1 was investigated. The Differential Scanning Calorimetry method was used. Decomposition of the test substance was observed above 200°C, i.e. 473K. Melting of the test substance was not observed below the temperature at which decomposition started.

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