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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 [1] and HERA [2], supporting the read across approach between structurally related AES. A detailed justification for the category approach and read-across is provided in the technical dossier (see IUCLID Section 13).  

Data are available on the acute and long-term aquatic toxicity to organisms of three trophic levels (fish, aquatic invertebrates and algae) and on the toxicity to aquatic microorganisms. Based on the available read across data the acute aquatic toxicity ranged between >1 mg/L and < 20 mg/L and the long-term toxicty values ranged between >0.1 mg/L und <1 mg/L. The substance does not significantly inhibit the respiration of activated sludge microorganisms (EC50-3h > 1000 mg/L a.i.). Hence, no effects of the substance are expected during the wastewater treatment in the sewage treatment plant.

[1] Danish EPA - Environmental and Health Assessment of Substances in Household Detergents and Cosmetic Detergent Products (2001). Environmental Project No. 615, pp. 24-28

[2] HERA - Human & Environmental Risk Assessment on ingredients of European household cleaning products (2004). Alcohol Ethoxysulphates (AES).

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