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: 284-660-7
CAS number: 84961-70-6
Study technically not feasible.
Substance is an extremely complex hydrocarbon UVCB. The substance is
comprised of 21 different categories of components. The total number of
individual components is estimated to be nearly 1000. It has been
estimated that there are 210 possible isomers in the category of dialkyl
benzenes alone. Standard tests for this endpoint are intended for single
substances and are not appropriate for the risk assessment of this
complex substance. Further complicating the sediment testing of Benzene,
mono-C10-13-alkyl derivs., distn. residues is the extremely low water
solubility (WATERNT estimates from 2.61e-03 to 5.83e-07 mg/L), extremely
high log Kow’s (KOWWIN estimates from 7.87 to 19.62) and extremely high
log Koc’s (KOCWIN estimates from 5.21 to 11.30 L/kg) of the individual
components. These properties indicate that the Benzene,
mono-C10-13-alkyl derivs., distn. residues components will be tightly
bound to organic material in soil and sediments and will have little, if
any, bioavailability. This lack of bioavailability can be observed in
the results from the recent OECD 222 earthworm reproduction study
conducted as a requirement for CoRAP. In the study, concentrations of
Benzene, mono-C10-13-alkyl derivs., distn. residues of up to 1000 mg/kg
(dry soil) had no effect on any of the measured endpoints (adult
mortality, adult body weight, juvenile production). This resulted in
NOECs of 1000 mg/kg (dry soil) and EC10s of >1000 mg/kg (dry soil).
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.
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