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EC number: 247-873-6
CAS number: 26650-05-5
environmental hazard assessment for (fresh-) water organisms and
sediment habitats is supported by several acute studies (pelagic
compartment) and by using scientific argumentation (sediment dwelling
the environmental hazard assessment of the registered substance acute
toxicity studies for freshwater fish, daphnids, freshwater algae and a
toxic control from a biodegradation test are available. A long-term daphnia
study is available as read across. Long-term studies for fish are
waived. Experimental information about toxicity on marine organisms is
above studies were conducted with the read across substance which was
similar to the submission substance. For
Butanedioic acid, sulfo-, 4-[2-[(1-oxo-10-undecenyl)amino]ethyl]
ester, disodium salt read across was made from the source chemical C12
-C18/C18'-MEA (Butanedioic acid, 2(or 3)-sulfo-, 4
-[2 -[(1 -oxo(C12 -C18(even numbered) and C18
unsaturated)alkyl))amino]ethyl]esters, disodium salts). In
a bridging study with algae it was shown that Butanedioic acid,
sulfo-, 4-[2-[(1-oxo-10-undecenyl)amino]ethyl] ester, disodium salt was
less toxic when compared to the source substance. The physical
chemical parameters of both substances are similar. Within the N2
subgroup, the toxicity does not show a clear C-Chain dependency, i.e.,
the EC50/LC50 data for all members of this group are similar. Therefore,
read across from C12
-C18/C18'-MEA (source) to Butanedioic
acid, sulfo-, 4-[2-[(1-oxo-10-undecenyl)amino]ethyl] ester, disodium salt
is considered as being justified.
short-term EC50/LC50 values for fish, Daphnia and algae were >32, 19, 26
mg solid content /L. Based on the toxic control of a ready
biodegradation study, no toxic effects on STP organisms were found at 50
mg/L. The daphnia long-term NOEC is 3 .6 mg/L.
registered substance has a log Pow of << 3 resulting in a low likelihood
to partition to sediment and is only moderately toxic to pelagic aquatic
organisms. Therefore, the registered substance is not expected to cause
adverse effects on sediment organisms. Consequently sediment toxicity
tests do not need to be conducted to assess the risk for
daphnids were the most sensitive trophic level with an acute EC50 of 19
mg solid content /L. This value will be used as worst case scenario for
the risk assessment of aquatic organisms.
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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