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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

The acute toxicity to Daphnia magna was determined with an EC50(48h) value of > 100 mg/L. 

Key value for chemical safety assessment

Marine water invertebrates

Marine water invertebrates
Effect concentration:
78 000 mg/L

Additional information

For short-term toxicity to daphnids, two studies are available on structurally related compounds, one study on a freshwater species and one study on a brackish water species.

The key study tested the effects of the substance FCC Katalysator on Daphnia magna in a limit test (control and 100 mg/L) under static conditions and according to OECD Guideline 202. As a result, an EC50(48h) value of > 100 mg/L was determined as well as a NOEC(48h) of >= 100 mg/L. The test material was filtered through a filter of mesh size 0.45 µm, the results are based on the nominal test material concentration (Rudolf 2007).

In the supporting study, the effects of kaolin with a median particle size of 4.5 µm was tested in a flow-through system in brackish water, using Anisogammarus convervicolus as test species (amongst others). An LC50(100h) value was reported at 78000 mg/L (McFarland and Peddicord 1980).