Registration Dossier
Registration Dossier
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EC number: 941-821-2 | 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:
- 2014
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: Guideline study performed under GLP. All relevant validity criteria were met.
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 830.7200 (Melting Point / Melting Range)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Remarks:
- inspected: March 2013; signature: May 2013
- Type of method:
- thermal analysis
- Melting / freezing pt.:
- ca. -51 °C
- Atm. press.:
- 1 atm
- Decomposition:
- no
- Sublimation:
- no
- Remarks on result:
- other: mean result of two DSC determinations
- Conclusions:
- The freezing temperature of the substance has been determined to be less than 222 ± 0.5 K or < -51.0 ± 0.5 °C.
- Executive summary:
The melting/freezing temperature was determined using EU Method A.1 and Differential Scanning Calorimetry under GLP. The mean freezing temperature of the test substance has been determined to be 222 K or < -51.0 °C at 1 atmosphere pressure.
Reference
Main study
- Experiment 1: The DSC-curve obtained examined the melting point of the substance. During cooling, an exothermic peak between -50°C and -75°C was observed. The effect was due to crystallisation of the test substance. When heated, an endothermic peak between -50°C and -0°C was observed. The extrapolated onset temperature was -50.59°C. The effect is due to melting of the test substance. An endothermic effect was observed between 225°C and 275°C. This effect was most likely obtained due to evaporation of the test substance. After the experiment it was observed that the test substance was evapourated from the sample container.
- Experiment 2 was performed to determine the duplicate melting point of the substance. Similar results to experiment 1 were obtained .The extrapolated onset of the melting peak was -51.50°C.
The melting temperature was determined as the average melting temperature obtained from experiment 1 (-50.59°C) and experiment 2 (-51.50°C).
Description of key information
Mp: 222 K (-51.0 °C) at 1 atmosphere, EU Method A.1 - Thermal Analysis Method, 2014
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- -51 °C
Additional information
Key study: EU Method A.1, 2014 : The melting/freezing temperature was determined using EU Method A.1 and Differential Scanning Calorimetry under GLP. The mean freezing temperature of the test substance has been determined to be 222 K or < -51.0 °C at 1 atmosphere pressure.
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