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Ecotoxicological information

Toxicity to soil macroorganisms except arthropods

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Administrative data

Endpoint:
toxicity to soil macroorganisms except arthropods: long-term
Type of information:
read-across based on grouping of substances (category approach)
Adequacy of study:
key study
Justification for type of information:
The justification document on the read across category approach is included in IUCLID section 13.

Data source

Materials and methods

Test material

Constituent 1
Chemical structure
Reference substance name:
Benzenesulfonic acid, C20-24 (even numbered) alkyl derivs.
Molecular formula:
C9H12SO3(CH2)n n=17-21
IUPAC Name:
Benzenesulfonic acid, C20-24 (even numbered) alkyl derivs.
Test material form:
other: liquid
Details on test material:
The test substance is a brown viscous liquid with sulfurous odor.

Results and discussion

Effect concentrationsopen allclose all
Duration:
28 d
Dose descriptor:
EC10
Effect conc.:
46 mg/kg soil dw
Nominal / measured:
nominal
Basis for effect:
reproduction
Remarks on result:
other: A. caliginosa
Dose descriptor:
EC10
Effect conc.:
>= 120 mg/kg soil dw
Nominal / measured:
nominal
Basis for effect:
reproduction
Remarks on result:
other: E. crypticus
Details on results:
No toxicity to E. crypticus was seen at any dose level, including the highest dose level of 120 mg/kg soil. A dose-related inhibition of cocoon production was seen in A. caliginosa at the highest concentration of 150 mg/kg soil.

Applicant's summary and conclusion

Conclusions:
Groups of A. caliginosa were exposed to soil containing 25 -150 mg/kg soil of LAS for 28 days. Groups of E. crypticus were exposed to concentrations of 0, 10, 40, 60, 80, 100, or 120 mg/kg soil (nominal). EC10 values based on reproduction were 46 mg/kg soil for A. caliginosa, and >= 120 mg/kg soil for E. crypticus.

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