Registration Dossier
Registration Dossier
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EC number: 231-100-4 | CAS number: 7439-92-1
Vapour pressure
Administrative data
- Endpoint:
- vapour pressure
- Data waiving:
- study scientifically not necessary / other information available
- Justification for data waiving:
- the study does not need to be conducted because the melting point is above 300°C
- Justification for type of information:
- JUSTIFICATION FOR DATA WAIVING
Lead metal is stated to have a vapour pressure of 133 Pa at a temperature of 1000 °C. Based on a volatilisation enthalpy of ∆Hvap = 177.9 kJ/mol, this vapour pressure can be recalculated with the aid of the Clausius-Clapeyron equation to a vapour pressure of 8.2 * 10-7 Pa at the melting temperature of lead (326°C). Thus, it can safely be assumed that metallic lead will have a negligible vapour pressure at 20°C.
In accordance with REACH Annex VII, Section 7.5, Column 2, testing is not required.
Data source
Materials and methods
Results and discussion
Applicant's summary and conclusion
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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