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Ecotoxicological information

Toxicity to soil macroorganisms except arthropods

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Description of key information

An acute toxicity study to earthworms was conducted to determine the effect of the test material DEGDB on earthworms (HLS 1998, VCL271/972157). The study was conducted according to OECD and EU test guidelines, and in compliance with GLP. Groups of earthworms were exposed to DEGDB at levels of 0 (control), 95, 171, 309, 556, and 1000 ppm (mg/kg) in an artificial standard soil, for a test period of 14 days. Each treatment and control group consisted of four replicate containers, each with ten worms per container (forty worms per group, total).

No mortalities were seen during the study, and all worms were normal in appearance on days 7 and 14 of the test.

The LC50 value of DEGDB to the earthworm was found to be in excess of 1000 ppm. The no-observed effect level (NOEL) was considered to be 1000 ppm.

Key value for chemical safety assessment

Short-term EC50 or LC50 for soil macroorganisms:
1 000 mg/kg soil dw

Additional information