Registration Dossier
Registration Dossier
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EC number: 619-799-8 | CAS number: 66309-83-9
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:
- 29 Jul - 24 Aug 2005
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Version / remarks:
- 1995
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Version / remarks:
- 67/548
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- differential scanning calorimetry
- Remarks:
- The crucible is heated at a constant heating rate (10 K/min). The measurement is carried out in a defined atmosphere (nitrogen). The amount of heat absorbed or released is measured and recorded. Aluminum crucibles with a small bore are used as containers.
- Key result
- Melting / freezing pt.:
- 8.5 °C
- Atm. press.:
- 1 013.3 hPa
- Conclusions:
- The melting point of the test item at atmospheric pressure is 8.5 °C.
- Executive summary:
The study was performed to assess the melting point. The study was conducted in accordance with EEC Method for "determination of the melting point", Directive 67/548/EEC, method A.1 which is in most parts equivalent to the OECD Guideline for Testing of Chemicals No. 102. The melting point of the test substance is 8.5 °C (1013 hPa).
Reference
Validity criteria for the measurement of the melting point:
| Target condition according to guideline: | Actual condition according to the study: | Validity criteria met: |
| The heating rate should not exceed 2 K/min. | Heating rate 0.25 K/min. | Yes |
| The mean of at least two measurements which are in the range of the estimated accuracy (± 0.5 K up to 600 K for this method) is reported as the melting temperature. | Mean of two measurements were reported 8.23 °C and 8.82 °C which are in the range of ± 0.5 °C. | Yes |
| If the substance decomposes or sublimes before the melting temperature is reached, the temperature at which the effect is observed shall be reported. | The test substance does not decompose or sublimate. | Yes |
Description of key information
The study was performed to assess the melting point. The study was conducted in accordance with EEC Method for "determination of the melting point", Directive 67/548/EEC, method A.1 which is in most parts equivalent to the OECD Guideline for Testing of Chemicals No. 102. The melting point of the test substance is 8.5 °C (1013 hPa).
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- 8.5 °C
Additional information
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
