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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Toxicity to other aquatic organisms

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Administrative data

Link to relevant study record(s)

Description of key information

Most conservative: 96-h LC50 0.068 Toad larvae

Additional information

In 96-h exposures, the LC50 for Malachite Green (MG) to frog larvae (0.173 mg/L) and toad larvae (0.0680 mg/L) were similar to those for fish. Adult newts were more resistant than frog or toad larvae (96-h LC50 1.03 mg/L), but about equally or less resistant than most of the invertebrates exposed. Mayfly naiads were the most sensitive invertebrate exposed (96 -h LC50 0.0790 mg/L) and the Asiatic clam was by far the most resistant to the chemical; it tolerated concentrations in excess of 100 mg/L. The other invertebrates exposed were more resistant than fish or amphibians, but less resistant than the Asiatic clam (Bills et al, 1977).