Registration Dossier
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EC number: 700-890-7 | CAS number: 503614-91-3
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:
- Between 15 February and 03 March 2012
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Version / remarks:
- using a procedure designed to be compatible with Method A1 Melting/Freezing Temperature of Commission Regulation (EC) No 440/2008 of 30 May 2008 and Method 102 of the OECD Guidelines for Testing of Chemicals, 27 July 1995.
- Deviations:
- no
- GLP compliance:
- yes
- Type of method:
- other: Differential scanning calorimetry (DSC)
- Decomposition:
- yes
- Decomp. temp.:
- >= 170 °C
- Sublimation:
- no
- Remarks on result:
- other: The test item has been determined to decompose with melting from approximately 170 °C (443 K).
- Conclusions:
- The test item has been determined to decompose with melting from approximately 170 °C (443 K).
- Executive summary:
Principle of the Test A phase transformation, e.g. melting or evaporation, or a reaction, e.g. dissociation, usually is associated with a heat effect. In the calorimeter, two identical crucibles, one filled with the test item and the other empty (used as a reference), are heated at a constant rate. During the experiment, the heat effect, i.e. the difference in heat flow between the sample crucible and the reference crucible, is registered. Performance of the Test Calibration The temperature accuracy of the DSC was assessed using an indium reference standard (purity*: 100 %). The melting temperature was determined to be 156.69 ºC and within the defined tolerance (156.6 ± 0.5 ºC). The DSC was therefore considered acceptable for use.
*Value quoted by supplier.
Conclusion
The test item has been determined to decompose with melting from approximately 170 °C (443 K).
Reference
Results
Thermograms and thermographic data for Determinations 1 to 3 are shown in Attachment 1.
Description of key information
The test item has been determined to decompose with melting from approximately 170 °C (443 K).
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- 170 °C
Additional information
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