Registration Dossier
Registration Dossier
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EC number: - | 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:
- Experimental dates: 22 March 2019 to 23 May 2019
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- guideline study without detailed documentation
- Remarks:
- The study was conducted according to an internationally recognised method, and under GLP. No deviation affected the quality of the study. The substance is adequately identified, but some data on composition is missing. Therefore validation applies with restrictions.
- 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:
- Commission Regulation (EC) No 440/2008
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- other: British Standard Method BS4633 - Method for the Determination of Crystallizing Point
- Version / remarks:
- 1970
- GLP compliance:
- yes (incl. QA statement)
- Remarks:
- issued 01/08/2019
- Type of method:
- method to determine freezing temperature
- Key result
- Melting / freezing pt.:
- 13.5 °C
- Executive summary:
The freezing point of the test substance was determined under GLP according to OECD 102/EU A1/BS4633 guidelines, using a method to determine the crystallising point.
Duplicate deteminations were performed, and the mean final temperature was retained.
The freezing temperature of test substance was determined to be 13.5°C.
Reference
In duplicate determinations, the test item was observed to freeze at 13.5˚C (mean of 14.0˚C and 13.0˚C), as indicated by crystallisation and a plateau in the cooling curve over 5 consecutive readings (2 minutes) at this temperature. Seeding was required just before the crystallisation point to prevent supercooling.
No temperature correction was required for thermometer error and the duplicate determinations were within the estimated accuracy of the method (± 0.5°C).
Description of key information
Experimental freezing point (i.e. transition from liquid to solid) = 13.5°C.
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- 13.5 °C
Additional information
A reliable experimental study, conducted according to a recognized OECD/EU/BS method and under GLP, is available.
Despite minor restrictions due to incomplete test item identification, it is considered as key study, and the result is retained as key data.
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.
