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Ecotoxicological information

Short-term toxicity to aquatic invertebrates

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Link to relevant study record(s)

Description of key information

The short term toxicity to aquatic invertebrates has been determined by a 48h Acute Immobilisation test on Daphnia Magna (OECD 202). As the test substance boron carbide shows a very low  water solubility of < 1mg/l, the extracts of a nominal concentration of 100mg/l have been chosen as test medium in a limit test. The EC50 has been determined to be >100mg/l (nominal). 

Key value for chemical safety assessment

Fresh water invertebrates

Fresh water invertebrates
Effect concentration:
100 mg/L

Marine water invertebrates

Marine water invertebrates
Effect concentration:
100 mg/L

Additional information

The study chosen as key study is valid for this endpoint as it has been performed according to GLP and OECD guideline 202 (Daphnia sp. Acute Immobilisation Test). Boron carbide has a very low solubility in water (<1mg/l), therefore a LIMIT test with a nominal concentration of 100mg boron carbide per litre is appropriate.