Registration Dossier
Registration Dossier
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EC number: 422-350-7 | CAS number: 5575-48-4
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:
- 2017
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Deviations:
- no
- GLP compliance:
- no
- Type of method:
- differential scanning calorimetry
- Key result
- Melting / freezing pt.:
- >= -60.09 - <= -43.87 °C
- Remarks on result:
- other: it is considered that the test was performed at atmospheric pressure
- Conclusions:
- A differential scanning calorimetry was performed on the registered substance. It concluded that it has a freezing point = -60.09°C and a melting point = -43.87°C at 101.325 kPa.
- Executive summary:
The melting point/freezing point of Decyltrimethoxysilane was determined by performing a differential scanning calorimetry in accordance with EU Method A.1. It concluded that the substance has a freezing point = -60.09°C and a melting point = -43.87°C at 101.325 kPa.
It is believed that the temperature difference between the freezing point and the melting point is due to supercooling.
Supercooling is the process of cooling a liquid below its freezing point, without it becoming a solid. A liquid below its freezing point can crystallise in the presence of a seed crystal or a nucleus around which a crystal structure can form. Supercooling is increased when the rate of cooling and the sample mass are decreased. Supercooling increases as sample mass decreases due to the decrease of nuclei by decrease of sample mass.
Reference
Freezing point = -60.09°C
Melting point = -43.87°C
It is believed that the temperature difference between the freezing point and the melting point is due to a supercooling process.
Supercooling is the process of cooling a liquid below its freezing point, without it becoming a solid. A liquid below its freezing point can crystallise in the presence of a seed crystal or a nucleus around which a crystal structure can form. Supercooling is increased when the rate of cooling and the sample mass are decreased. Supercooling increases as sample mass decreases due to the decrease of nuclei by decrease of sample mass.
Description of key information
The melting point/freezing point of Decyltrimethoxysilane was determined by performing a differential scanning calorimetry in accordance with EU Method A.1. It concluded that the substance has a freezing point = -60.09°C and a melting point = -43.87°C at 101.325 kPa.
It is believed that the temperature difference between the freezing point and the melting point is due to supercooling.
Supercooling is the process of cooling a liquid below its freezing point, without it becoming a solid. A liquid below its freezing point can crystallise in the presence of a seed crystal or a nucleus around which a crystal structure can form. Supercooling is increased when the rate of cooling and the sample mass are decreased. Supercooling increases as sample mass decreases due to the decrease of nuclei by decrease of sample mass.
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- -43.87 °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.
