Registration Dossier
Registration Dossier
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EC number: 271-808-0 | CAS number: 68608-89-9 This substance is identified by SDA Substance Name: C11-C13 branched alkyl benzene sulfonic acid sodium salt and SDA Reporting Number: 25-097-04.
Toxicity to terrestrial arthropods
Administrative data
Link to relevant study record(s)
Description of key information
In the key long-term study the EC10 for H. assimilis was 100 mg/kg dry weight, and the EC10 for H. aculeifer was 82 mg/kg dry weight. In the short-term study the EC10 for Folsomia fimetaria in various soils ranged from 85-93 mg/kg dry weight soil.
Key value for chemical safety assessment
- Short-term EC50 or LC50 for soil dwelling arthropods:
- 85 mg/kg soil dw
- Long-term EC10, LC10 or NOEC for soil dwelling arthropods:
- 82 mg/kg soil dw
Additional information
In the short-term study, groups of 10 male and 10 female Folsomia fimetaria were exposed to various concentrations of Na-LAS (LAS) in three different soil types for 21 days. At the end of this period, the number of adult and juvenile organisms was counted. Another test was done to compare the toxicity of three LAS salts, Na, Ca, and Mg, in one soil type (sandy). There was little variation in toxicity among the three soil types and in the three salt species. The EC10 for Folsomia fimetaria for LAS in various soils ranged from 85-93 mg/kg dry weight soil.
In the key long-term study, groups of H. assimilis and H. aculeifer were exposed to various concentrations of test material for 21 days. At the end of this period, the number of offspring were counted. Based on reproduction, the EC10 for H. assimilis was 100 mg/kg dry weight, and the EC10 for H. aculeifer was 82 mg/kg dry weight.
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