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
- 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:
- yes
- Type of method:
- differential scanning calorimetry
- Key result
- Melting / freezing pt.:
- -47 °C
- Atm. press.:
- 1 013 Pa
- Decomposition:
- no
- Sublimation:
- no
- Conclusions:
- Under the study conditions, the test substance showed no melting point but a glass transition at -47 °C.
- Executive summary:
A study was conducted to determine the melting point of the test substance according to OECD Guideline 102 and EU Method A.1. Since the resins are liquid at room temperature, the glass transition/melting was measured at the test substance ambient temperatures using conventional differential scanning calorimetry (DSC). A sample of ≈10 mg was loaded in a standard aluminum crucible (40 µL) fitted with a pierced lid. The measurements were conducted at a linear heating rate of 10 °C min-1 using commercial DSC equimpment (Mettler DSC823e or Q10 from TA Instruments). The DSC cell was flushed with nitrogen gas at a flow rate of 50 mL min-1. Under the study conditions, the test substance showed no melting point but a glass transition at -47 °C (Boutreau, 2017).
Reference
Description of key information
The melting point / freezing point was determined according to OECD Guideline 102 and EU Method A.1 (Boutreau, 2017).
Key value for chemical safety assessment
Additional information
No melting point but a glass transition at -47 °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.
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.
