Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 307-301-9
CAS number: 97593-01-6
A measured BCF is not available for any of the members of this category. Instead, log BCF have been calculated on the basis of measured or calculated log Kow using two QSAR. The calculated BCF increase from C6 to C14, before decreasing at higher carbon numbers. The maximum calculated log BCF was 4.66 for tetradecene.
A measured BCF is not available for any members of this category. Log
Kow is observed to increase with increasing carbon number for members of
this category. As the measured log Kow of the category member with the
lowest carbon number (C6, hex-1 –ene) is >3 the bioaccumulation endpoint
cannot be waived for any category member. However, ECHA's Guidance on
Information Requirements and Chemical Safety Assessment R7c Endpoint
Specific Guidance (2008) indicates that before commissioning a new
vertebrate test alternative sources of data on the bioaccumulation
potential of a chemical should be used.
Nonpolar substances have been shown to have a linear relationship
between log Kow and BCF in the log Kow range 1 -6. However, at log Kow
>6 a decreasing relationship is observed. Several QSAR have been
developed that calculate the BCF of non-polar, hydrophobic compounds on
the basis of their log Kow (e.g. Veith et al, 1979, Connell and Hawker,
1988 and USEPA, 2008). Alpha olefins with carbon number ranges of C6-C20
and olefins with carbon number ranges of C6-C22 fall within the
applicability domain of these QSAR. For category members with carbon
numbers above this log BCF are not calculated, but instead read across
from other category members based on the observed trend in calculated
The log Kow of icos-1 -ene has been calculated in KOWWIN (log Kow 10.03)
and SPARC (log Kow 11.65). The log Kow of icos-2-ene has been calculated
in KOWWIN (log Kow 9.95) and SPARC (log Kow 11.68). ECHA's guidance on
information requirements and chemical safety assessment - Part C: PBT
assessment (2008) states that the aquatic BCF of a substance is probably
lower than 2000l/kg if the calculated log Kow is higher than 10. As none
of the Kow models have experimental data in this Kow range the
reliability of modelled log Kow values >10 is not known. However, as
both models indicate a log Kow >10 we can conclude that category members
with carbon numbers of C20 and above are unlikely to bioaccumulate.
Category members with carbon number ranges of C10-C18 have calculated
log BCF greater than 3, indicating that they may bioaccumulate or pose a
risk of secondary poisoning.
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.
Ce site web utilise des cookies afin de vous garantir la meilleure expérience possible sur nos sites web.
Welcome to the ECHA website. This site is not fully supported in Internet Explorer 7 (and earlier versions). Please upgrade your Internet Explorer to a newer version.
Do not show this message again