Registration Dossier
Registration Dossier
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EC number: 219-581-9 | CAS number: 2467-13-2
Toxicity to soil macroorganisms except arthropods
Administrative data
Link to relevant study record(s)
Description of key information
The LC50 (14 d) of the test substance in artificial soil was 107 mg/kg dw . The highest concentration causing no mortality, LC0 (14 d), was equal to 50 mg/kg dw and the lowest concentration causing 100 % mortality, LC100 (14 d) was equal to 200 mg/kg dw (OECD 207).
Key value for chemical safety assessment
- Short-term EC50 or LC50 for soil macroorganisms:
- 107 mg/kg soil dw
- Long-term EC10, LC10 or NOEC for soil macroorganisms:
- 50 mg/kg soil dw
Additional information
GUIDELINE
The test was conducted to determine the acute toxicity of the test substance to earthworms according to "The guidelines for the testing of chemicals" (HJ/T 153 -2004) and "The guidelines for the testing of chemicals" (SEPA, Beijing: China Environmental Sciences Press, 2004); with reference to Procedure 207 of the OECD Guidelines for Testing of Chemicals "Earthworm, Acute Toxicity Tests" (1984).
METHOD
Artificial soil with moisture controlled in the range 31 % to 36 % was used during the test. The pH was controlled at 6.0 to 6.3, temperature was maintained at 20°Cto 22°C, humiditity was controlled at 80 % to 85 % and continuous light was supplied with an intensity of 400 lux to 800 lux.
RESULTS
Based on the result of the range-finding test and the definitive test, the LC50 (14 d) of the test substance in artificial soil was 107 mg/kg (dry weight soil) with 95 % confidence limit of 86.5 mg/kg to 133 mg/kg (dry weight soil). The highest concentration causing no mortality, LC0 (14 d), was equal to 50 mg/kg (dry weight soil). The lowest concentration causing 100 % mortality, LC100 (14 d) was equal to 200 mg/kg (dry weight soil).
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