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Toxicity to terrestrial arthropods

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In accordance with REACH Chapter R.7C Endpoint Specific Guidance, specifically R. Testing Strategy (Table R.7.11-2), data to characterize toxicity to terrestrial arthropods is waived for the following reasons. Di-isotridecyl phthalate ester (DTDP) is biodegradable; consequently it is considered to degrade in the environment and does not persist. DTDP does not cause acute or chronic aquatic toxicity at its maximum water solubility, consequently it does not pose an acute or chronic aquatic hazard, and it is not possible to derive NOEC or PNEC values needed for quantitative risk assessment. However, it is possible to qualitatively conclude based on low solubility and available effects test data that DTDP is not harmful to aquatic organisms. Acute and chronic toxicity data for soil macroorganisms, earthworms, also show that DTDP does not cause effects at high soil loading rates. Therefore, based on these considerations, additional short and long-term toxicity testing for soil organisms is not needed.