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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

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Administrative data

Link to relevant study record(s)

Description of key information

Ceriodaphnia dubia: LC50(48h) = 0.255 mg Trinickel dicitrate/L

Key value for chemical safety assessment

Additional information

Different short term toxicity tests for various cladoceran species are available. The most sensitive species was Ceriodaphnia dubia, in an examination according to a national guideline (US-EPA) the LC50(48h) was 0.255 mg Trinickel dicitrate/L. Also other cladocerans (i.e. Daphnia longispina) showed EC50 values < 1 mg Trinickel dicitrate/L, but only the data for Ceriodaphnia dubia were shown in a study record.


[citric acid, nickel salt] is present on the surface of an inert carrier material (aluminium oxide). Depending on the pH value to prepare the impregnation solution or present while impregnation different molar ratios between nickel and citric acid are possible.

For this reason the concentrations of the single Nickel constituents of [citric acid, nickel salt] are various. The calculated values refer to the constituent Trinickel dicitrate and have to seen as a lower threshold value.