Registration Dossier
Registration Dossier
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EC number: 214-230-6 | CAS number: 1115-70-4
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:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- GLP compliance:
- no
- Type of method:
- capillary method
- Key result
- Melting / freezing pt.:
- ca. 216 °C
- Decomposition:
- yes
- Decomp. temp.:
- ca. 218 °C
- Conclusions:
- The test item melted under decomposition starting at approximately 216 °C
- Executive summary:
The test item melted under decomposition starting at approximately 216 °C
Reference
The melting point/melting range was determined by differential scanning calorimetry (DSC) as well as via a capillary tube in a melting block. The DSC measurements showed (see report 2015397.01) an endothermal effect in the temperature range of 190 - 240 °C. Directly after this endothermal effect the baseline became ambiguous. After the measurement (final test temperature: 500 °C) a black residue was observed.
An additional measurement with the capillary method was performed in order to clarify the melting range. A heating rate of 1 K/min was chosen. The filling height of the test item was approximately 6 mm. 3 measurements were done.
| No. | Set point [°C] | Heating rate [K/min] | end point [°C] | remarks |
| 1 | 200 | 1 | 250 | 200 °C: test item unchanged 216 °C: test item starts to melt 218 °C: formation of occasional bubbles 219 °C: test item completely melted 222 °C: formation of occasional bubbles stopped 250 °C: no further changes, white coating on upper capillary |
| 2 | 200 | 1 | 250 | 200 °C: test item unchanged 216 °C: test item starts to melt 218 °C: formation of occasional bubbles 219 °C: test item completely melted 222 °C: formation of occasional bubbles stopped 250 °C: no further changes, white coating on upper capillary |
| 3 | 215 | 1 | 225 | 215 °C: test item unchanged 216 °C: test item starts to melt 220 °C: formation of occasional bubbles 222 °test item completely melted |
Under the consideration of the results from the DSC measurements and the capillary method it was concluded that the test item melted under decomposition starting at approximately 216 °C.
Description of key information
The test item melted under decomposition starting at approximately 216 °C
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- 216 °C
Additional information
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