Registration Dossier
Registration Dossier
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EC number: 456-350-3 | CAS number: 878665-13-5
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:
- 14 November 2003
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Remarks:
- Method A1 of Commission Directive 92/69/EEC study. Purity and isomers composition specified.
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Version / remarks:
- 27July1995.
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Version / remarks:
- 92/69/EEC
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- other: BS4633: Determination of crystallizing point
- GLP compliance:
- yes (incl. QA statement)
- Remarks:
- Swiss GLP compliance programme (inspected on September 09 and 30, 2002/ signed on December 2002)
- Type of method:
- method to determine freezing temperature
- Specific details on test material used for the study:
- - Physical state: liquid
- Storage condition of test material: refrigerator (0-10°C) under nitrogen - Melting / freezing pt.:
- 19 °C
- Atm. press.:
- ca. 1 atm
- Decomposition:
- no
- Sublimation:
- no
- Executive summary:
The freezing point of the test substance was determined according to OECD/102/EU A1 guideline, using BS4633 method for the determination of crystallizing point.
The determination was carried out in duplicate, with seeding to initiate crystallisation.
A freezing temperature of 292 +/- 0.5K (19 +/- 0.5 °C) was determined for the test material.
Reference
Starting temperature: 294 K (det.1) and 298 K (det.2)
Individual measurements: (1) 292 K, (2) 292 K.
The test material remained unchanged until 288 K, then a crystal of test material was added to the supercooled liquid to initiate the crystallisation.
Transition occurs within accuracy limits, therefore freezing temperature will be expressed as a single value.
Description of key information
Freezing point is borderline to ambient temperature.
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- 19 °C
Additional information
A fully reliable experimental study on freezing point measurement, conducted according to a recognized OECD/EU/BS method and under GLP, is available. It is considered as a key study, the result is considered as key data.
As seeding was used to initiate crystallisation, the substance may be observed whether as a low melting solid, or a subcooled liquid.
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.
