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EC number: 500-464-9
CAS number: 160901-27-9
1 - 2.5 moles ethoxylated
The alkyl ether sulfates grouped within the AES category show
similar structural, physico-chemical, environmental and toxicological
properties.The approach of grouping different AES for the evaluation of
their effects on human health and the environment was also made by the
Danish EPA  and HERA , supporting a read-across approach between
structurally related AES.
In case of abiotic degradation, hydrolysis is not an important
process for alkyl ether sulfates due to the chemical structure of these
All members of the category alkyl ether sulfates are readily
biodegradable which is proved by many studies available for certain
mixtures. A study which reports ready biodegradability of AES (C9-11,
1-2.5EO) Na (CAS 160901-28-0) is available. This study was used for
read-across to AES (C9 -11, 1-2.5EO) NH4 (CAS 160901-27-9).
Due to the ready biodegradability of alkyl ether sulfates it is
unlikely that the substances persist in the environment.
Furthermore, the results of different wastewater simulation tests
which were conducted according to the OECD Guideline 314 show, that
alkyl ether sulfates are not persistent in water and are ultimately
removed under aerobic and anaerobic conditions.
 Danish EPA - Environmental and Health Assessment of Substances
in Household Detergents and Cosmetic Detergent Products (2001).
Environmental Project No. 615, pp. 24-28
 HERA - Human & Environmental Risk Assessment on ingredients of
European household cleaning products (2004).Alcohol Ethoxysulphates
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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