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Ecotoxicological information

Short-term toxicity to aquatic invertebrates

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Description of key information

The substance exhibits an EC50 for freshwater invertebrates of 8.61 mg/L.

Key value for chemical safety assessment

EC50/LC50 for freshwater invertebrates:
8.61 mg/L

Additional information

The ecotoxicological dataset for the submission substance is very limited; therefore identification of one or more appropriate read-across substance is required in order to address the REACh data requirements. The submission substance is an organo-zinc substance, which has been demonstrated to rapidly dissolve in standard aqueous medium. Thus, readily soluble zinc-containing substances were thought as appropriate source substance. There is a great array of data that deals with the ecotoxicological properties of soluble zinc compound and dissolved zinc. Selected candidates were zinc chloride, zinc sulphate and zinc lactate. The last one is the preferred candidate as the counter ion is readily biodegradable organic and the total zinc amount is similar to the submission substance. Therefore, a key value for chemical safety assessment is derived by molecular weight correction of ecotoxicity data from zinc lactate.