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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Ecotoxicological information

Long-term toxicity to fish

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Administrative data

Link to relevant study record(s)

Description of key information

Key value for chemical safety assessment

Additional information

In Annex IX of Regulation (EC) No 1907/2006, it is laid down that long-term toxicity tests shall be proposed by the registrant if the chemical safety assessment indicates the need to investigate further the effects on fish. 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 (Z)-3,7-Dimethylocta-2,6-dienal 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 (Z)-3,7-Dimethylocta-2,6-dienal has been identified as a class 3 type compound (Vinyl/Allyl ketone) according to Verhaar (1992). Thus, the mode of action is assumed as unspecific reactive. For these MoA class an a/c-ratio (90 -percentile) of 31.7 is reported by ECETOC (Technical report No. 91). Taking this into account it can be concluded, that - considering an a/c-ratio <100 - it is unlikely that a long-term fish study would decrease the PNEC (relative to the PNEC from acute studies with an AF of 1000) and thus not significantly change the risk assessment. Furthermore, the substance is readily biodegradable.

Therefore, and for reasons of animal welfare a long-term toxicity testing in fish is not provided.