Registration Dossier
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EC number: 616-651-4 | CAS number: 787582-75-6
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:
- no data available
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Version / remarks:
- 92/69/EC
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Deviations:
- no
- GLP compliance:
- no
- Type of method:
- capillary method
- Key result
- Melting / freezing pt.:
- 79.6 °C
- Atm. press.:
- 1 013.25 hPa
- Decomposition:
- no
- Conclusions:
- The melting point of the test substance was determined to be 79.6 °C (mean of three single values).
- Executive summary:
A study was conducted according to Regulation (EC) No 440/2008 method A.1 to determine the melting point of the test item using capillary method. A small amount (spatula-tipful) of test substance was crushed in an agate mortar and filled into three melting-point determination tubes up to a fill height of 4 to 5 mm. The heating rate in the main test was 0.5 °C/min. On the basis of the preliminary test with an averaged melting point of 84.2 °C, a set point of 79 °C and a max point of 89 °C were set. The melting point observed in a first main experiment was too close to the set point. Therefore, a second main test was carried out with a lowered set point of 75 °C and a max point of 85 °C. All determined values (manual and automatic) as well as the corresponding curves were printed out after the melting points were reached. The melting point of the test item is 79.6 °C.
Reference
Measured melting points of the test substance (2nd main test):
1) 79.6 °C
2) 79.6 °C
3) 79.5 °C
-> Mean: 79.6°C (SD +/- 0.06°C)
Description of key information
The melting point of the test item was determined to be 79.6 °C at 1013.25 hPa.
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- 79.6 °C
Additional information
A study was conducted according to Regulation (EC) No 440/2008 method A.1 to determine the melting point of the test item using capillary method. A small amount (spatula-tipful) of test substance was crushed in an agate mortar and filled into three melting-point determination tubes up to a fill height of 4 to 5 mm. The heating rate in the main test was 0.5 °C/min. On the basis of the preliminary test with an averaged melting point of 84.2 °C, a set point of 79 °C and a max point of 89 °C were set. The melting point observed in a first main experiment was too close to the set point. Therefore, a second main test was carried out with a lowered set point of 75 °C and a max point of 85 °C. All determined values (manual and automatic) as well as the corresponding curves were printed out after the melting points were reached. The melting point of the test item is 79.6 °C
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