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EC number: 205-492-2 | CAS number: 141-63-9
Table 1 - Summary of biological observations
N/a - as replicate number was 1 for these treatments, SD cannot be calculated
NOEC (28 day): ≥1000 mg/kg dry weight, nominal concentration, growth and survival of Eisenia fetida, highest concentration tested.
EC10 and NOEC (56 day): >1000 and ≥1000 mg/kg dry weight, respectively, reproduction of Eisenia fetida, highest concentration tested.
A 56 day earthworm reproduction test, at concentrations up to 1000 mg/kg soil dry weight, has been conducted in accordance with OECD TG 222 (earthworm reproduction test). No effects on survival or reproduction were observed.
A 28 day NOEC value of ≥1000 mg/kg dry weight has been determined for the effects of the test substance on growth and survival of adult earthworms, based on nominal concentrations. A 56 day NOEC value of ≥1000 mg/kg dry weight and EC10 value of >1000 mg/kg dry weight have been determined for the effects of the test substance on reproduction of the earthworm, based on nominal concentrations.
Test substance concentrations were measured at the beginning of the test and on days 2, 28 and 56. Concentrations ranged from 85 to 90% of nominal concentrations at test initiation through to day 28 and declined over the last four weeks of the 56 day exposure period to 77%, with a mean measured concentration of 850 mg/kg (85% of nominal concentration). Results of the replicate samples were generally consistent, indicating homogeneous distribution of the test substance in the exposure vessels.
The 56 day EC10 value is equivalent to >850 mg/kg when expressed as measured concentration.
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