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Toxicity to soil microorganisms

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The reaction mass is not readily biodegradable. However, since the test substance has a low potential for adsorption no significant adsorption to the soil phase is expected. The risk of bioaccumulation is low based on the log Kow as well as the estimated BCF values of the major components of the reaction mass as well as the experimentally determined BCF of piperazine, which was smaller than 4 (NITE, 1979). The substance is not classified according to DSD/DPD and GHS. Furthermore, results with aquatic organisms revealed only little harmful effects of the test substance (NOEC > 1 mg/L). Therefore, studies with terrestrial organisms do not need to be conducted.