Registration Dossier
Registration Dossier
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EC number: 928-812-9 | CAS number: -
Endpoint summary
Administrative data
Description of key information
Additional information
A marine biodegradability test available for hydrocarbons, C13-C20, n-alkanes, iso-alkanes, cyclics, 40-60% aromatics demonstrates that the substance is readily biodegradable (Svalheim et al. 2001). This test resulted in 64% ThOD removal. Since it is known that biodegradation in seawater is generally slower than in freshwater, a substance can be considered readily biodegradable if the degradation rate exceeds 60% ThOD (European Chemical Agency 2008). This is corroborated by results obtained in freshwater biodegradation studies with anlogue substances found to be inherently biodegradable (CEFIC 1995a, 1995b, EMBSI 1996). The substance, hydrocarbons, C13-C20, n-alkanes, iso-alkanes, cyclics, 40-60% aromatics, is thus not expected to persist in the environment.
Thus, for the substance as such no classification for the environment would be required taking into account other ecotoxicological data, too. However, for reasons explained in the endpoint summary section 6 under 'conlusion on classifcation' a split of classification is made for environmental classification based on the slightly different results obtained in the ready biodegradation tests with cuts of different chain lengths. Cuts with a predominant higher chain length of 16 to 20 carbon atoms are classified chronic aquatic category 4 (GHS/CLP) and R53 (DSD).
Eurpean Chemicals Agency (2008) Guidance on information requirements and chemical safety assessment Chapter R.7b: Endpoint specific guidance.
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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