Of all the compounds tested, 1Asp was characterized by good or very good antifeedant activity, and its toxicity toward test organisms from a wide range of systematic groups (bacteria, fungi, terrestrial plants, freshwater algae, freshwater crustaceans) was the lowest. Due to the low value of log KOW (-0.91) it was also characterized by a low risk of bioaccumulation. Therefore, an additional chronic toxicity study was conducted to determine the ability of D. magna to reproduce in an environment contaminated with 1Asp at sublethal concentrations (≤ 10 mg dm - 3 ). The results of the study are summarized in .