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Ecotoxicological information

Toxicity to terrestrial arthropods

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Description of key information

No data on chronic terrestrial toxicity are available. However, the substance is not persistent in the soil compartment. The equilibrium partitioning method has been used for assessing the hazard to soil organisms.

Key value for chemical safety assessment

Additional information

There are no data available concerning toxicity of styrene to soil arthropods. However no test is proposed to cover this endpoint for the following reasons. In the case of readily biodegradable substances which are not applied to soil it is generally assumed that the substance will not enter the terrestrial environment and as such there is no need for additional testing on soil organisms. Styrene is not a strong adsorptive substance, is volatile and rapidly degraded in the air via photo oxidation, so that an indirect soil exposure via STP sludge and aerial deposition is considered to be not relevant. Furthermore, the equilibrium partitioning method can be used for assessing the hazard of soil organisms from data on aquatic organisms.