Registration Dossier
Registration Dossier
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EC number: 214-703-7 | CAS number: 1187-93-5
Vapour pressure
Administrative data
Link to relevant study record(s)
- Endpoint:
- vapour pressure
- Data waiving:
- study technically not feasible
- Justification for data waiving:
- vapour pressure testing is not required because the standard boiling point is < 30 ºC, as this substance will have a vapour pressure value above the limit of measurement (i.e. 10E+05 Pa)
- Reason / purpose for cross-reference:
- data waiving: supporting information
Reference
Description of key information
The study is not proposed by the registrant as the experimental determination of the vapour pressure for a gas is neither feasible nor scientifically relevant.
For risk assessment purpose the atmospheric pressure (101325 Pa) is reported as key value.
Key value for chemical safety assessment
- Vapour pressure:
- 101 325 Pa
- at the temperature of:
- 20 °C
Additional information
Vapour pressure is not a relevant property for gases as by definition the vapour pressure of a substance is the saturation pressure above a solid or a liquid substance at constant temperature. The experimental determination of the vapour pressure for a gas is neither feasible nor scientifically relevant.
For risk assessment purpose the atmospheric pressure (101325 Pa) is reported as key value. In fact this corresponds to the vapour pressure value of a liquid substance at its boiling point, it therefore represents the vapour pressure of the liquid perfluoromethyl vinyl ether during the phase transition to gas, which occurs at -26°C.
Information regarding the vapour pressure of perfluoromethyl vinyl ether was also sourced from two secondary sources as the Company SDS and a public technical data sheet which reports that the substance at 20°C has a vapour pressure of 505 and 484 KPa respectively. The data were probably derived by calculation. Considering the low relevancy of the information at 20°C (therefore above the boiling point of the substance) and considering that the data are non-peer-reviewed and of Klimisch-4 reliability, they have not been included in this 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.
