Registration Dossier
Registration Dossier
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EC number: - | CAS number: -
Melting point / freezing point
Administrative data
Link to relevant study record(s)
- Endpoint:
- melting point/freezing point
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- April 2020
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- comparable to guideline study with acceptable restrictions
- Qualifier:
- according to guideline
- Guideline:
- other: UN Manual of Tests and Criteria
- Version / remarks:
- revision 7 (2019)
- Principles of method if other than guideline:
- - Principle of test: The thermal stability was investigated by differential scanning calorimeter (DSC) in closed glass crucibles with a heating rate of 3 K/min (see report PS20200103-4 dated April 28, 2020). The energy release was >300J/g (maximum 594J/g starting at 175°C. Therefore, the determination of the SADT(self accelerating decomposition temperature) was performed.
- Short description of test conditions: Adiabatic Storage Test was performed in a closed apparatus under air with an oven temperature of 75°C. After the sample has reached the oven temperaturethe temperature was increased with 0.5 K/h until a thermic reaction can be seen.
- Parameters analysed / observed: Temperature and pressure are constantly monitored. - GLP compliance:
- no
- Type of method:
- other: SADT
- Key result
- Melting / freezing pt.:
- ca. 242 °C
- Decomposition:
- yes
- Decomp. temp.:
- ca. 242 °C
- Conclusions:
- From the adiabatic storage test a melting point of approx. 242 °C was determined.
- Executive summary:
A thermal transition was observed in the range of 175 to 300 °C with a first peak at 242 °C which is assumed as melting event. At about 138 °C an exothermal reaction started. The substance decomposes upon melting, the calculated SADT (self accelerating decomposition temperature) is 130 °C for a 50 kg container.
Reference
A thermal transition was observed in the range of 175 to 300 °C with a first peak at 242 °C which is assumed as melting event. At about 138 °C an exothermal reaction started.
Description of key information
A thermal transition was observed in the range of 175 to 300 °C with a first peak at 242 °C which is assumed as melting event. At about 138 °C an exothermal reaction started. The substance decomposes upon melting, the calculated SADT (self accelerating decomposition temperature) is 130 °C for a 50 kg container.
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- 242 °C
Additional information
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