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Ecotoxicological information

Sediment toxicity

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In Annex X section 9.5.1 of Regulation (EC) No 1907/2006, it is laid down that chronic tests on sediment organisms shall be proposed by the registrant if the chemical safety assessment indicates the need to investigate further the effects on sediment organisms. According to Annex I of this regulation, the chemical safety assessment triggers further action when the substance or the preparation meets the criteria for classification as dangerous according to Directive 67/548/EEC or Regulation EC 1272/2008 or is assessed to be a PBT or vPvB. No information concerning effects on sediment-organisms is available for methylvinylether (CAS 107-25-5). However, the available data indicate that the substance is not very adsorptive (log Koc < 3; see IUCLID chapter 5.4.1) or bioaccumulative (log Kow < 3; see IUCLID chapter 5.3.1). Furthermore, the substance’s Henrys Law Constant (575 Pa*m³/mol) and distribution modelling indicate that the main target for environmental distribution will be air (see IUCLID chapters 5.4.2 and 5.4.3). Therefore, a relevant distribution into the sediment compartment and a considerable exposure of sediment organisms is not expected. In addition, the substance is not a PBT or vPvB substance and the risk assessment results in Risk Characterization Ratios (RCRs) far below 1 for all compartments.

Consequently, no test on sediment organisms is performed. The equilibrium partitioning method has been used for assessing the hazard to sediment organisms.