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Ecotoxicological information

Toxicity to soil macroorganisms except arthropods

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Description of key information

No Observed Effect Concentration (NOEC) for mortality and weight changes was determined to be the concentration of 1000 mg test item/kg soil for 38.5% substance. The NOEC  for mortality and weight changes for 100% substance is 385 mg/kg soil.

The No Observed Effect Concentration (NOEC) for reproduction was determined to be the concentration of 316 mg test item/kg soil for 38.5% substance. The NOEC for reproduction for 100% substance is 121 mg/kg soil.

Key value for chemical safety assessment

Long-term EC10, LC10 or NOEC for soil macroorganisms:
121 mg/kg soil dw

Additional information

A 56-day test in treated artificial soil prepared according to OECD 222 (5% peat only) is available. Different concentrations of the test item were incorporated into the soil in 6 treatment groups (5 test item concentrations, control)and 4 replicates for the test item treatments and 8 replicates for the control with 10 worms each (Ganßmann, 2013). Assessment of adult worm mortality, behavioural effects and biomass development was carried out after 28 days exposure of adult worms in treated artificial soil. Reproduction rate (number of offspring) was assessed after additional 28 days (assessed 56 days after application).

The body weight changes of the earthworms after 4 weeks exposure to Sulfonic acids, C14-16 (even numbered)-alkane hydroxy and C14-16 (even numbered)-alkene, sodium salts were not statistically significantly different compared to the control up to and including the highest test concentration of 1000 mg test item/kg soil with 38.5% substance. The reproduction rates were not significantly different compared to the control up to and including the test concentration of 316 mg test item/kg soil with 38.5% substance. No behavioural abnormalities were observed in any of the treatment groups. The feeding activity in all the treated groups was comparable to the control.