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EC number: 231-130-8
CAS number: 7440-21-3
Silicon is very ubiquitous in the aquatic and terrestrial
environments. Natural background concentrations dominate the total Si
concentration in the environment. Anthropogenic releases of elemental
silicon is transformed/oxidized to silica (SiO2) in the
environment Anthropogenic sources can be expected to have no influence
or only insignificant influence on background levels of silica. High
quality background levels measurements data of silicon in the European
environment is available (source: Geochemical
Atlas of Europe; copyright © 2005 the Association of the Geological
Surveys of The European Union (EuroGeoSurveys)/ the Geological Survey of
Finland).The geochemical data are based
on the analysis of samples of stream water, stream sediment, floodplain
sediment (or alluvial soil), residual soil, and humus collected from 26
European countries. High quality and consistency of the data were
ensured by using standardised sampling methods and by applying
harmonised quality assurance measures during chemical analysis and
subsequent data handling stages.
Summary of silica background concentrations from the 26 EU member states
Si - Silica
Geochemical Atlas of Europe; copyright ©
2005 the Association of the Geological Surveys of The European Union
(EuroGeoSurveys)/ the Geological Survey of Finland.
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.
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