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Ecotoxicological information

Toxicity to soil macroorganisms except arthropods

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Description of key information

NOECreproduction = 250 mg/kg soil d.w. 

Key value for chemical safety assessment

Additional information

Chronic test towards earthworm 56d (OECD 222):

The chronic toxicity of Benzenepropanoic acid, 3,5-bis(1,1-dimethylethyl)-4-hydroxy-,C7-9-branched alkyl esters towards earth worms was determined in a GLP test according to OECD guideline 222 using artificial soil (ECT 2006).

 

The NOEC for biomass (28 days) was determined to be >1000 mg test item/kg soil (dw). The 56 day NOEC for reproduction was determined as 250 mg test item/kg soil (dw) and the LOEC reproduction was determined as 500 mg test item/kg soil (dw). The EC50 value (56 days) for reproduction was calculated as 945,44 mg test item/kg soil (dw). The results indicate that Benzenepropanoic acid, 3,5-bis(1,1-dimethylethyl)-4-hydroxy-,C7-9-branched alkyl esters exhibit no negative chronic effects towards soil macro-organisms even at high test substance concentrations. 

Acute test towards earthworm (OECD 207):

In addition, the acute toxicity towards earthworm was tested in a GLP-study according to OECD guideline 207 (1984) in a 14-day test with nominal concentrations of 96, 172, 309, 556, 1000 mg/kg dry soil. No significant mortality and no abnormal behavior or symptoms of toxicity were recorded at any test concentration.