Registration Dossier
Registration Dossier
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EC number: 273-309-3 | CAS number: 68956-56-9
Vapour pressure
Administrative data
Link to relevant study record(s)
Description of key information
The vapour pressure of the most volatile main constituent, alpha pinene (690 Pa at 20°C), was retained as worst case for the chemical safety assessment of the substance.
Key value for chemical safety assessment
- Vapour pressure:
- 690 Pa
- at the temperature of:
- 20 °C
Additional information
In a weight of evidence approach, literature data and experimental values were gathered for the main constituents of the substance.
In this way the following vapour pressures were determined for the main constituents of the substance:
- terpinolene : VP = 101 Pa at 20°C
- alpha pinene : VP = 690 Pa at 20°C
- dipentene (read-across with d-limonene) : VP = 200 Pa at 25°C
- camphene : VP = 380 Pa at 20°C
- gamma terpinene : VP = 103 Pa at 23.5°C
Therefore, based on the main constituents, the vapour pressure of the UVCB substance was estimated to be in the range 101 - 690 Pa at 20°C.
The upper limit of this range (corresponding to the most volatile main constituent) was considered as the worst-case, relevant key value for the chemical safety assessement.
Thus, the vapour pressure of alpha pinene (690 Pa at 20°C) was retained for the chemical safety assessment.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.
