Registration Dossier
Registration Dossier
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EC number: 255-288-2 | CAS number: 41272-40-6
Toxicity to other aquatic organisms
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).
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