Registration Dossier
Registration Dossier
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EC number: 281-682-9 | CAS number: 84012-38-4 Extractives and their physically modified derivatives such as tinctures, concretes, absolutes, essential oils, oleoresins, terpenes, terpene-free fractions, distillates, residues, etc., obtained from Ruscus aculeatus, Liliaceae.
Vapour pressure
Administrative data
- Endpoint:
- vapour pressure
- Data waiving:
- study technically not feasible
- 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:
- Vapour Pressure Statement
The vapour pressure of a substance is defined as the saturation pressure above a solid or liquid substance. At the thermodynamic equilibrium, the vapour pressure of a pure substance is a function of temperature only.
The experimental measurement of the vapour pressure by gas saturation method or many other usually methods, cannot be applied due to technical reasons because the test item is a multicomponent mixture.
But also the estimation method by calculation from the modified Watson correlation is not applicable, due to many unknown variables: heat of vaporization, normal boiling point, compressibility factor.
It is possible to state that the vapour pressure is low, because the substance melting point (the substance burnt before reaching the boiling point) is high.
Data source
Materials and methods
Test material
- Reference substance name:
- Ruscus aculeatus, ext.
- EC Number:
- 281-682-9
- EC Name:
- Ruscus aculeatus, ext.
- Cas Number:
- 84012-38-4
- Molecular formula:
- not applicable
- IUPAC Name:
- Ruscus aculeatus, ext.
- Test material form:
- solid
Constituent 1
Results and discussion
Applicant's summary and conclusion
- Conclusions:
- But also the estimation method by calculation from the modified Watson correlation is not applicable, due to many unknown variables: heat of vaporization, normal boiling point, compressibility factor.
It is possible to state that the vapour pressure is low, because the substance melting point (the substance burnt before reaching the boiling point) is high.
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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