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Ecotoxicological information

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The test results obtained in short-term aquatic toxicity studies on fish, daphnia, algae and microorganisms indicate that the test material has no acute toxic effects to aquatic organisms up to the limits of its water solubility.

In the chemical safety assessment of all available information on the UVCB substance WS400517 it is concluded that no further investigation of effects on aquatic organisms is needed. This conclusion is based on the following reasons. (1) The substance has a very low ecotoxicological and toxicological potential without any hazard classification. (2) PNECs and DNELs could not be derived because at the highest recommended/achievable concentrations or doses in the tests no effects were observed. (3) The concentration of the substance in the environment will be extremely low because (a) the substance is not directly introduced into the environment and (b) it has very low water solubility (< 1 mg/l). (4) The substance has a relatively high molecular weight (897 Da) and thus a low potential to cross biological membranes. (5) The substance has a low bioaccumulation potential based on log Pow = 2.2 and the high molecular weight. (6) The substance has a low log Koc = 2.4 and thus no high potential for adsorption to sediment. Based on reasons (5) and (6) exposure of aquatic animals via the food chain also is very unlikely.

It is therefore not expected that performance of long-term toxicity studies would provide additional ecotoxicological information on this substance.