Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Toxicity to aquatic algae and cyanobacteria

Currently viewing:

Administrative data

Link to relevant study record(s)

Description of key information

For the substance as such, zinc bis(2-ethylhexanoate), no aquatic toxicity studies are available. Thus, read-across to the assessment entities soluble zinc substances and 2-ethylhexanoic acid is applied since the ions of zinc bis(2-ethylhexanoate) determine its fate and toxicity in the environment.

Zinc: Regarding zinc toxicity to freshwater algae, the lowest IC50 amounts to 0.136 mg Zn/L (Selenastrum capricornutum) and the lowest NOEC is the geomean of 0.019 mg Zn/L (Pseudokircherniella subcapitata) whereas the NOECs for chronic toxicity to marine algae range from 0.0078 to 0.67 mg/L (dissolved concentrations). The respective species NOEC/EC10 values are applied in the species sensitivity distribution approach.

2-ethylhexanoic acid: An EC50 (72h) of 49.3 mg/L was derived in a study with the freshwater algae species Desmodesmus subspicatus.

In sum, zinc bis(2-ethylhexanoate) seems to have potential for toxicity to aquatic algae and cyanobacteria.

Key value for chemical safety assessment

Additional information