Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
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EC number: 291-367-8 | CAS number: 90387-90-9
Surface tension
Administrative data
Link to relevant study record(s)
Description of key information
Compounds known as surface-active agents (surfactants) reduce the surface tension of a liquid, the interfacial tension between two liquids or between a liquid and a solid. Surfactant molecules typically contain both polar (hydrophilic) and non-polar (lipophilic) moieties. They are also called amphiphilic compounds. Such a chemical structure is used as an initial indicator (alert) of surface-active properties. (Guidance on information requirements and chemical safety assessment – Chapter R.7a: Endpoint specific guidance; p. 77)
According to column 2 of Annex VII (standard information requirements for substances manufactured or imported in quantities of 1 tonne or more) of Regulation (EC) No 1907/2006, a study needs only to be conducted if based on structure, surface activity can be expected or can be predicted or is a desired property of the material.
Graphite, acid-treated is an inorganic solid, consisting of natural graphite and variable amounts of either intercalated nitric acid or acetic acid. Neither graphite, nor the intercalated nitric or acetic acid exhibits properties which would affect the surface tension of aqueous solutions. Once brought in contact with water the intercalated acids and the nitrite/nitrate/acetate ions are partially leached out.
Due to absence of amphiphilic properties, surface activity can be excluded and performance of a study to determine the surface tension 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.
