Registration Dossier
Registration Dossier
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EC number: 248-470-8 | CAS number: 27458-93-1
Toxicity to microorganisms
Administrative data
Link to relevant study record(s)
Description of key information
Key value for chemical safety assessment
Additional information
In accordance with Column 2 of REACH Annex VIII, the activated sludge respiration inhibition study does not need to be conducted as the substance is readily biodegradable and the applied test concentrations are in the range that can be expected in the influent to a sewage treatment plant.
The registration substance is a substance of unknown or variable composition (UVCB). Its constituents incorporate an alcohol functional group on an alkyl chain, with carbon numbers in the range (C14-C20, predominantly C16-C18). The alkyl structures are predominantly monobranched (methyl or ethyl branching, at or beyond the 6 carbon position) and may be considered ‘essentially linear. Therefore, available data for linear constituents (C14 – C18) are presented as supporting data.
A reliable study for octadecanol, conducted according to an appropriate national standard method is available (Kirch, 1994). An EC0 >10 000 mg/l after 30 minutes contact time was determined for the species Pseudomonas putida, i.e. the EC50 is greater than the limit of solubility.
In other available secondary sources, to which no reliability could be assigned, EC50 values >10 000 mg/l are reported for tetradecanol and hexadecanol.
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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