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EC number: 200-313-4 | CAS number: 57-11-4
Soluble fatty acids are readily biodegradable which was demonstrated in biodegradation tests according to OECD-guidelines. In addition degradation studies cited in the Draft Assessment Report (DAR) for Fatty Acids (C7-C20) (Volume1, 2008) DT50 values of 1.5 to – 3 days were reported, indicating rapid primary degradation of fatty acids by microbial organisms in the soil environment.
Further, in the same DAR low toxicity of a fatty acid formulation was demonstrated in several tests on soil macroorganisms, terrestrial non-target arthropods and terrestrial plants (DAR, Volume 1, 2008). These studies prove the negligible effects of fatty acids to terrestrial macroorganisms. Furthermore, fatty acids occur in soils naturally, are part of physiological pathways and can be used as energy source. Thus, low toxicity is expected for terrestrial organisms exposed to the test substance.
In conclusion, due to a) the rapid degradation of fatty acids, b) the use as energy source, and c) tests available for a fatty acid formulation toxic effects to terrestrial organisms are not expected.
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