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Ecotoxicological information

Toxicity to microorganisms

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Description of key information

Scientifically valid study shows limited inhibition of bactial growth at approximatley 50 mg/l equivalent of the hydroxide or chloride, with inhibition of specific bacterial strains starting at concentrations > 5 mg/l Cr III.

However, enhancement of growth at lower concentrations (essential element)

Citrate is assessed as biodegradable and is present in living tissues.

Key value for chemical safety assessment

EC50 or LC50 for microorganisms:
50 mg/L

Additional information

Testing performed on other Cr III salts.