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Ecotoxicological information

Sediment toxicity

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Description of key information

A test on sediment organisms is not needed as MPA is not likely sorbed to sediment.

Key value for chemical safety assessment

Additional information

A test on sediment organisms is not needed as the calculated Koc value is 2.214 and is thus below the trigger value for sediment effects assessment of 500 - 1000. Furthermore, according to column 2 in Annex X of Regulation (EC) 1907/2006, a toxicity test with sediment organisms is not needed if the outcome of the chemical safety assessment indicates no unacceptable effects on sediment organisms. In a first step, the PNEC for the sediment is derived from the PNEC aqua (freshwater) using the equilibrium partitioning method. If the risk characterisation ratio is higher than 1, the effect on sediment organisms needs to be investigated further and the PNEC sediment should be derived from a study result.