Registration Dossier
Registration Dossier
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EC number: 619-079-3 | CAS number: 949109-75-5
Endpoint summary
Administrative data
Description of key information
Additional information
Plant sterols occur naturally in the environment. Concentrations of plant sterols are considered with reference to the key marker substance, β-sitosterol, which is the major constituent by weight in plant sterols as registered. Measured concentrations of β-sitosterol in the environment are consistent with its ubiquitous essentiality in plant matter. Concentrations in soil vary with the soil horizon, with very high concentrations in leaf litter (ca. 500 mg/kg), declining to 1 to 90 mg/kg in the topsoil and very much lower concentrations in the deeper layers. Concentrations in soil that have been subject to normal agricultural practices are likely to be higher. Wash-off from soil into surface water is a natural and unavoidable process which can give rise to concentrations of the order of 1 μg/L. As a lipophilic substance it will adsorb to the organic matter present in suspended and bottom sediments. Therefore it is consistent with its properties to find measurable concentrations in sediments, with 1 mg/kg being typical.
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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