Benzenesulfonic acid, methyl-, C20-24 (even numbered) sec-alkyl derivs.

Toxicity to soil macroorganisms except arthropods

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.

Materials and methods

Test material

Test material information

Constituent 1

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 concentrations

Effect concentrations 1

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

Effect concentrations 2

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.