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EC number: 904-797-4 | 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:
- 2017-07-10 - 2018-03-07
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Remarks:
- The department of health of the government of the united kingdom
- Type of method:
- differential scanning calorimetry
- Specific details on test material used for the study:
- Identification: m- & o-terphenyl rxn mass
Appearance/Physical state: a cream colored solid block
Storage conditions: approximately 4 °C, in the dark, under nitrogen - Key result
- Melting / freezing pt.:
- 32 °C
- Decomposition:
- no
- Sublimation:
- no
- Remarks on result:
- other: no pressure stated
- Conclusions:
- The melting point of the test item has been determined to be 32 °C (305 K).
- Executive summary:
32 °C (305 K) was determined according to GLP by a differential scanning calorimetry procedure designed to be compatible with Method A.1 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 to be the melting point of the test sample.
Reference
Thermographic Data
Thermal Event |
Interpretation |
Temperature (°C) |
|
Determination 1 |
Determination 2 |
||
Extrapolated endotherm onset temperature |
Melting point |
32.20 |
31.72 |
Mean melting point: 32 °C (305 K)
Discussion
The determinations were performed in a nitrogen atmosphere to prevent atmospheric moisture freezing in the instrument furnace when operating at temperatures below 0 °C. The determinations were performed starting at a sub ambient temperature to ensure a suitable period of level baseline was obtained prior to the test item melting, to allow accurate integration of the endotherms.
Conclusion
The melting point of the test item has been determined to be 32 °C (305 K).
Description of key information
32 °C (305 K) was determined according to GLP by a differential scanning calorimetry procedure designed to be compatible with Method A.1 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 to be the melting point of the test sample.
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- 32 °C
Additional information
No pressure was stated in the report, but it can be assumed, that a pressure of normal conditions was predominating.
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