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EC number: 249-044-4
CAS number: 28472-97-1
Diisodecyl azelate (CAS 28472-97-1) is readily
biodegradable. Thus, Diisodecyl azelate will be rapidly removed from
natural water compartments as well as from wastewater in sewage
treatment plants. The substance has a log Koc > 5 indicating a potential
to adsorb to soil and sediment particles. The estimated half time for
the reaction with OH-radicals is 11.4 hours (24h day; OH-concentration:
0.5E+06 OH/cm3). However, photodegradation is not an important
environmental fate process since the substance is not expected to
evaporate into the atmosphere due to its very low vapor pressure of <
0.001 Pa at 20 °C. Due to its low water solubility (< 0.05 mg/L in aqua
bidest), ready biodegradability and potential for adsorption to soil and
sediment particles, only low concentrations of Diisodecyl azelate are
expected to be released into the aquatic environment. The substance will
be bioavailable to aquatic organisms mainly via feed and contact with
suspended organic particles. Diisodecyl azelate is not bioaccumulative,
based on the criteria given in Regulation (EC) No. 1907/2006, Annex
XIII, 1.1.2 (BCF < 2000 L/kg). After uptake by fish species, extensive
and fast biotransformation of the substance by carboxylesterases into
Azelaic acid acid and the corresponding alcohol (Isodecanol) is
expected. BCF/BAF values estimated with the BCFBAF v3.01 program,
Arnot-Gobas model including biotransformation, also indicate that this
substance will not be bioaccumulative (BCF/BAF: 0.9/1.1 L/kg).
In conclusion, Diisodecyl azelate is effectively removed from the
environment by biotic and abiotic degradation processes. Due the low
water solubility and high adsorption potential, the main route of
exposure for aquatic organisms such as fish will be via food ingestion
or contact with suspended solids. Ingested amounts of the substance in
organisms are expected to be effectively metabolized to Azelaic acid and
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.
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