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Ecotoxicological information

Sediment toxicity

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Description of key information

Acute toxicity data from a study in marine sediment to the intertidal amphipod Corophium volutator are available. No long-term data are available.  
However, a long-term toxicity study on sediment organisms is not justified.

Key value for chemical safety assessment

EC50 or LC50 for marine water sediment:
5 129 mg/kg sediment dw

Additional information

Sediment toxicity

The obtained results were considered to be valid for the AAPBs.

Fresh water sediment

No data are available.

Marine sediment

The acute toxicity of Coco AAPB to the intertidal amphipod Corophium volutator was investigated in a study conducted according to OSPARCOM (1995) 'A sediment bioassay using a amphipod Corophium sp.'. Corophium volutator were exposed for 10 d under static conditions to the test item. The 10 d NOEC and LC50 values were determined to be 14248 mg product/kg sediment dw (5129 mg a.i./kg sediment dw) and >14248 mg product/kg sediment dw (>5129 mg a.i./kg sediment dw nominal), respectively.

No data on long-term toxicity to sediment-dwelling organisms are available. In Annex IX of Regulation (EC) No 1907/2006, it is laid down that sediment toxicity tests 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 Directive 1999/45/EC or is assessed to be a PBT or vPvB. The hazard assessment of AAPB reveals neither a need to classify the substance as dangerous to the environment, nor is it a PBT or vPvB substance, nor are there any further indications that the substance may be hazardous to the environment. Furthermore, the substance is not persistent in this compartment, due to physico-chemical properties and the proven rapid biodegradability. Therefore, a long-term toxicity study on sediment organisms is not justified.