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Short-term toxicity to aquatic invertebrates

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Description of key information

Acutely toxic for aquatic invertebrates

Key value for chemical safety assessment

Fresh water invertebrates

Fresh water invertebrates
Effect concentration:
4.7 mg/L

Additional information

In the evaluation of the available studies on the acute toxicity of styrene to aquatic invertebrates the same considerations apply as for fish in regard to volatility. Two studies have been conducted under flow-through conditions and with analytical monitoring of the substance concentrations and are considered fully valid:

Daphnia magna, 48 -hr EC50: 4.7 mg/l (Springborn, 1995)

Hyalella azteca, 96 -hr LC50: 9.5 mg/l (Springborn, 1995)

The lowest EC50 is therefore taken for the assessment of the acute toxicity of styrene for aquatic invertebrates