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EC number: 500-344-6 | CAS number: 157627-94-6 1 - 2.5 moles ethoxylated
% of ThCO2
28 (after acidification)
% DOC-removal after x days
Readily biodegradable: 78-100% (ThCO2) in 28 days (OECD 301B)
Comparing all available biodegradation studies, the members of the AES category can generally be considered as readily biodegradable.
Since no biodegradability tests are available for AES (C12-14, 1-2.5 EO) TEA (CAS 157627-94-6), a read-across approach from the two structurally similar substances AES (C12-14, 1-2.5EO) MIPA (CAS 1187742-72-8) and AES (C12-14, 1-2.5EO) Na (CAS 68891-38-3) was applied.
Both studies were conducted with non-adapted domestic sludge under GLP conditions. The test with AES (C12-14, 1-2.5EO) MIPA (CAS 1187742-72-8) was performed according to OECD guideline 301B (Sasol, 2004). After 28 days a biodegradation rate between 78 - 100% (CO2 evolution) was reported for the MIPA salt.
The test with AES (C12-14, 1-2.5EO) Na (CAS 68891-38-3) was performed according to EU-guidelines (C.4-A) (Sasol, 1993a). This test shows a biodegradation rate of 100% (DOC removal) after 28 days.
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