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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Short-term toxicity to fish

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Administrative data

Link to relevant study record(s)

Description of key information

Fatty acids, C8-10, zinc salts:

Toxicity studies of fatty acids, C8-10, zinc salts are not available. In the assessment of environmental toxicity of fatty acids, C8-10, zinc salts, read-across to the assessment entities zinc and C8 -10 fatty acids is applied since zinc cations and fatty acid anions determine its fate and toxicity in the environment. Please refer to the respective assessment entity for further details.

C8-10 fatty acids:

The lowest acute LC50 for fish, 51 mg/L, was observed for the effect of octanoic acid (C8) in a reliable, GLP-conform 96 h toxicity test with Oryzias latipes conducted similar to OECD 203. However, results should be considered carefully due to the decrease of solution pH observed with increasing test concentrations. The observed pH decrease may provoke weakness in fish and a higher sensibility.



Key data (lowest LC50 values) are:

- for Oncorhynchus mykiss: 0.169 mg Zn/L (single value) at neutral/high pH and low hardness

- for Pimephales promelas (single values): 0.780 mg Zn/L at low pH (high hardness) and 0.330 mg Zn/l at neutral/high pH, high hardness

Key value for chemical safety assessment

Additional information