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Environmental fate & pathways

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Two Klimisch-1-rated studies were carried out on ready biodegradability, i.e. a CO2 evolution test (1996) and a manometric respirometry test. Whereas in the CO2 evolution the test substance did not reach the 60% degradability criterion, the study with the manometric respirometer revealed a degree of degradability of 94%, thus the substance clearly was readily biodegradable under the conditions of this study. Since the manometric respirometry test was considered to have delivered data of higher validity and reliability, undecylenic acid is considered readily biodegradable.



Under the conditions of the available study (HPLC method – OECD Test Guideline 121), the adsorption coefficient was found to be log Koc = 2.84 (Koc 691.83). Therefore, the adsorption potential of the test item is considered low. 

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