Registration Dossier
Registration Dossier
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EC number: 940-223-9 | CAS number: -
Biodegradation in water and sediment: simulation tests
Administrative data
Link to relevant study record(s)
Description of key information
Based on the LSC analysis of total 14C activity in the effluent the mean elimination rate of the total influent concentration of N-Dodecanoyl[1-14C]glycine, sodium salt was calculated to be 97.77 % in a continuously operating activated sludge unit. 2.2% of 14C was found in the effluent but only 37% could be adsorbed in a reversed phase cartouche, 67% of 14C is most likely incorporated in biological material not sorbing to the cartouche. This means that only 37% of the 2.2% 14C in the effluent is as worst case related to the test substance itself (=0.8%) and thereforie the elimination in the sewage treatment plant is >99%. For exposure estimations 99% primary degradation in the sewage treatment plant is used.
The mineralization reached a mean value of 86.6 %; the mass balance was determined to be 91.7 % on average.
Key value for chemical safety assessment
Additional information
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