Registration Dossier
Registration Dossier
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EC number: 260-280-7 | CAS number: 56602-77-8
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:
- 07 August 2015 to 04 May 2016
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Justification for type of information:
- Study conducted to OECD and EC guidelines and in compliance with GLP
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Deviations:
- no
- GLP compliance:
- yes
- Type of method:
- method to determine freezing temperature
- Specific details on test material used for the study:
- The Dewar flask was filled with a freezing mixture of acetone/solid carbon dioxide, which was maintained just below the expected crystallisation temperature. The sample tube was filled to a suitable depth and seeding crystals (sand) were added in an attempt to reduce a supercooling effect that had been evident in preliminary testing. The sample was stirred continuously and the temperature measured at intervals of 30 seconds until a plateau of five constant readings was obtained (estimated accuracy ± 0.5 °C). The determination was performed in triplicate
- Key result
- Melting / freezing pt.:
- >= 15 - <= 16 °C
- Conclusions:
- The freezing temperature of the substance was determined to be 16°C.
- Executive summary:
The freezing temperature of the substance was determined in a study which was conducted under GLP conditions and in accordance with the standardised guidelines EU Method A.1 and OECD 102.
A preliminary test had indicated that this was the appropriate method, as crystallisation was observed at above -25˚C.
Under the conditions of the study, the freezing temperature of the substance was determined to be 16°C.
Reference
Description of key information
The freezing temperature of the substance was determined to be 16°C, OECD 102, EU Method A.1, Envigo CRS Ltd, (2016).
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- 16 °C
Additional information
The freezing temperature of the test material was determined in a study which was conducted under GLP conditions and in accordance with the standardised guidelines OECD 102 and EU Method A.1.
Under the conditions of the study the freezing temperature of the substance was determined to be 16°C.
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.
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