Registration Dossier
Registration Dossier
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EC number: 291-367-8 | CAS number: 90387-90-9
Vapour pressure
Administrative data
Link to relevant study record(s)
Description of key information
The vapour pressure of a substance is defined as the saturation pressure above a solid or liquid substance. At thermodynamic equilibrium, the vapour pressure is only a function of temperature. The chemical’s tendency to partition into the atmosphere is controlled by its vapour pressure, which is essentially the maximum vapour pressure that a pure chemical can exert in the atmosphere. This can be viewed as a kind of solubility of the chemical in the atmosphere. (Guidance on information requirements and chemical safety assessment – Chapter R.7a: Endpoint specific guidance; p. 65)
According to chapter 2 of REACH Annex XI, testing for a specific endpoint may be omitted, if it is technically not possible to conduct the study as a consequence of the properties of the substance.
Graphite, acid-treated is an inorganic solid, consisting of natural graphite and variable amounts of either intercalated nitric acid or acetic acid. Upon heating above 190 °C the substance starts to decompose. Against this background, determination of the vapour pressure is technically not feasible and not required under Regulation (EC) No 1907/2006 (REACH).
Key value for chemical safety assessment
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.
