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EC number: 500-465-4
CAS number: 160901-28-0
1 - 2.5 moles ethoxylated
The terrestrial toxicity of the alkyl ether sulfates (AES) was
assessed in a weight of evidence approach. The assessment approach is
based on the physico-chemical properties of alkyl ether sulfates, the
e-fate of the substances and the available ecotoxicological data. The
substances in the alkyl ether sulphate (AES) category have been
demonstrated to be rapidly biodegradable in several screening tests. The
substances will be extensively removed from the aqueous phase during
sewage treatment. A rapid mineralisation in aquatic as well as
terrestrial environment can be expected and persistence of alkyl ether
sulfates in the environment is unlikely.
The available test on toxicity of the category substance Alcohols,
C12-14, ethoxylated, sulfates, sodium salts to earthworms determined no
detrimental effects. The toxicity of Alcohols, C12-14, ethoxylated,
sulfates, sodium salts to earthworms was investigated in a GLP guideline
study conducted according to OECD 222. Eisenia fetida were exposed to
nominal test concentrations of 72, 129, 232, 417, and 750 mg a.i./kg
soil dry weight in artificial soil. The total study duration was 56
days. After 28 days mortality and body weight change of adult worms was
recorded. After 56 days, the number of offspring was determined. No
mortality and no significant changes in body weight change and
reproduction rate were overserved. The determined NOEC (56 d) was≥750 mg
a.i./kg soil dw. Based on the available test results acute or chronic
effects of the substances of the alkyl ether sulfates (AES) category on
terrestrial organisms are not expected. The environmental exposure
assessment for the substance indicates no risk for the terrestrial
compartment (all RCR < 1; please refer to Chapter 9 and 10 of the
Chemical Safety Report for detailed information). In accordance to
column 2 of Annex IX, section 9.4 of Regulation (EC) No. 1907/2006, no
further tests on the effects of the substance zo terrestrial organisms
are needed and consequently testing was omitted.
The assessment is based on the data currently available. New
studies, based on the category review and the final decisions issued for
some of the category substances, which are also relevant for this
assessment, are currently being conducted. The hazard assessment with
respect to aquatic toxicity will be updated once all ongoing studies
have been finalised.
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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