Registration Dossier
Registration Dossier
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EC number: 608-770-5 | CAS number: 326894-55-7
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:
- 24.04.2015
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline 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:
- no
- Type of method:
- differential scanning calorimetry
- Key result
- Melting / freezing pt.:
- 86.9 °C
- Atm. press.:
- 1 013 hPa
- Decomposition:
- no
- Sublimation:
- no
- Conclusions:
- The melting point of the substance was determined to be 86.9 °C at 1013.25 hPa.
- Executive summary:
A study was conducted according to OECD test guideline 102, Regulation (EC) No 440/2008 method A.1. The melting range was determined by differential scanning calorimetry (DSC 25 - 500 °C). The test item and the reference are heated up from the starting temperature to the final temperature at a constant heating rate in a defined atmosphere (nitrogen). Open crucibles are used as containers for the test item and as empty reference crucible. The quantity of heat absorbed or released is measured and recorded. The DSC measurements (25 - 500 °C) showed that the test item had a melting range of 86.9 °C under atmospheric conditions
Reference
The DSC measurements with a heating rate of 10 K/min showed a two-step endothermal effect (melting) in the temperature range of 25 – 500 °C.
Melting point (DSC measurements)
Ident No. | Test item/ mg | Final test temperature / °C | Temperature range (melting) / °C | Onset / °C | Crucible |
34999 | 11.86 | 200 | 80 - 100 | 86.81 | Aluminium with a hole |
35000 | 12.62 | 500 | 80 - 95
| 87.03 | Aluminium with a hole |
35003 | 9.76 | 500 | 80 - 95 | 86.86 | Aluminium with a hole |
After the DSC measurements the test item appeared melted. No mass loss occurred. The test item had a mean melting point of 86.9 °C.
Description of key information
The melting point of the test item was determined to be 86.9 °C at 1013.25 hPa.
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- 86.9 °C
Additional information
A study was conducted according to OECD test guideline 102, Regulation (EC) No 440/2008 method A.1. The melting range was determined by differential scanning calorimetry (DSC 25 - 500 °C). The test item and the reference are heated up from the starting temperature to the final temperature at a constant heating rate in a defined atmosphere (nitrogen). Open crucibles are used as containers for the test item and as empty reference crucible. The quantity of heat absorbed or released is measured and recorded. The DSC measurements (25 - 500 °C) showed that the test item had a melting range of 86.9 °C under atmospheric conditions
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