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EC number: 931-096-0 | 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:
- 2015
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Remarks:
- 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:
- equivalent or similar to guideline
- Guideline:
- EPA OPPTS 830.7200 (Melting Point / Melting Range)
- Deviations:
- no
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- other: CIPAC MT 1 (2009): Freezing Point
- Deviations:
- not applicable
- GLP compliance:
- yes (incl. QA statement)
- Remarks:
- inspected January 2013; signature: March 2013
- Type of method:
- thermal analysis
- Melting / freezing pt.:
- ca. -58.7 °C
- Atm. press.:
- 1 009 hPa
- Decomposition:
- no
- Sublimation:
- no
- Remarks on result:
- other: Mean melting point; with onset temperatures not deviating by more than 0.5 K in duplicate
- Conclusions:
- The melting point of the substance has been determined to be: -58.7 ±0.5 °C.
- Executive summary:
The melting/freezing temperature was determined using EU Method A.1 and Differential Scanning Calorimetry. During the heating phase a distinct endothermic effect was observed in the temperature range of -70 to -50 °C in duplicate, which can be associated with the melting of the test substance. As the onset temperatures in both tests deviate by more than 0.5 K from their mean value, the test substance has a melting point of -58.7 °C at 1009.0 hPa (atmospheric pressure).
Reference
Table 1. Results of DSC Measurements
Sample | Sample weight / mg | Onset of Effect / °C | Range of effect / °C | Weight loss / mg | Atmospheric pressure / hPa |
1 | 16.21 | -58.63 | -70 to -50 (endo) | 16.21 | 1009.0 |
2 | 14.88 | -58.81 | -70 to -50 (endo) | 14.75 | 1009.0 |
Description of key information
Mp: -58.7 ±0.5 °C at 1009.0 hPa, EU Method A.1 - Thermal Analysis Method, 2016
Key value for chemical safety assessment
Additional information
The melting/freezing temperature was determined using EU Method A.1 and Differential Scanning Calorimetry. During the heating phase a distinct endothermic effect was observed in the temperature range of -70 to -50 °C in duplicate, which can be associated with the melting of the test substance. As the onset temperatures in both tests deviate by more than 0.5 K from their mean value, the test substance has a melting point of -58.7 °C at 1009.0 hPa (atmospheric pressure).
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