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Ecotoxicological information

Short-term toxicity to aquatic invertebrates

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Description of key information

No data are available for dichromium tris(chromate), however data from related chromium compounds are available in the recent WHO review. 

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Additional information

The WHO (2009) summarises the available data concerning short-term toxicity of Cr (III) compounds to aquatic invertebrates. LC50s in freshwater invertebrates ranged from 0.1 mg/l (Daphnia pulex) to 442 mg/l (Asellus aquaticus). LC50s ranging from 10 to 100 mg/l were reported for marine invertebrates. Trivalent chromium is more toxic in soft waters than hard waters.