Registration Dossier
Registration Dossier
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EC number: 291-367-8 | CAS number: 90387-90-9
Adsorption / desorption
Administrative data
Link to relevant study record(s)
Description of key information
According to Column 2 of REACH Annexes VIII and IX (standard information requirements for substances manufactured or imported in quantities of 10 tonnes per year or more) of Regulation (EC) No 1907/2006 a study on adsorption/desorption does not need to be conducted if the substance can be expected to have a low potential for adsorption based on its physicochemical properties.
Graphite, acid-treated is an inorganic solid, consisting of natural graphite and variable amounts of either intercalated nitric acid or acetic acid. The main component – graphite - is a naturally occurring inorganic solid substance which is insoluble in water. Due to a lack of relevant functional groups it can be assumed that graphite shows no adsorption/desorption behaviour.
The intercalated acid (nitric or acetic acid) and the intercalated ions (nitrite/nitrate, acetate) are partially leached out by water. Due to the strongly polar character of the ions the assessment of adsorptive/desorptive behaviour to organic soil matter can be regarded as negligible.
Against this background it can be concluded that graphite, acid-treated exhibits no adsorptive/desorptive behaviour. Therefore, performance of a study on adsorption/desorption is 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.
