[No public or meaningful name is available]

Melting point / freezing point

Link to relevant study record(s)

Reference

Endpoint:

melting point/freezing point

Type of information:

experimental study

Adequacy of study:

key study

Study period:

31 October - 07 November 2022

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

guideline study with acceptable restrictions

Remarks:

Non-GLP study; suitable for registration and classification.

Qualifier:

according to guideline

Guideline:

OECD Guideline 102 (Melting point / Melting Range)

Deviations:

not specified

GLP compliance:

no

Type of method:

differential scanning calorimetry

Specific details on test material used for the study:

No further details in the study report

Key result

Decomposition:

yes

Remarks:

The crucible was visually checked after the determination: The crucible lid was covered with degraded test item

Remarks on result:

other: No melting or boiling peak was observed throughout the study. For each determination, a step corresponding with glass transition was observed between ~ -6.5°C (Mean Onset Temperature)

Conclusions:

No melting or boiling peak was observed throughout the study. For each determination, a step corresponding with glass transition was observed between ~ -6.5°C (Mean Onset Temperature) and ~ 3.8°C (Mean Endset Temperature).
An exothermic peak that corresponds with degradation was observed from 261.2°C (Onset temperature). From this temperature, the mass started to decrease until the end of the measurement (81.44% total mass loss). Moreover, the DSC signal got disturbed after the peak due the obstruction of the lid hole.

Executive summary:

The purpose of this study was to determine the melting point/melting range and the boiling point of the test item RED HF2.

No melting or boiling peak was observed throughout the study. For each determination, a step corresponding with glass transition was observed between ~ -6.5°C (Mean Onset Temperature) and ~ 3.8°C (Mean Endset Temperature).
An exothermic peak that corresponds with degradation was observed from 261.2°C (Onset temperature). From this temperature, the mass started to decrease until the end of the measurement (81.44% total mass loss). Moreover, the DSC signal got disturbed after the peak due the obstruction of the lid hole.

Description of key information

No melting or boiling peak was observed throughout the study. For each determination, a step corresponding with glass transition was observed between ~ -6.5°C (Mean Onset Temperature) and ~ 3.8°C (Mean Endset Temperature).

An exothermic peak that corresponds with degradation was observed from 261.2°C (Onset temperature). From this temperature, the mass started to decrease until the end of the measurement (81.44% total mass loss). Moreover, the DSC signal got disturbed after the peak due the obstruction of the lid hole.