Registration Dossier
Registration Dossier
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EC number: 457-320-2 | CAS number: -
Toxicity to soil macroorganisms except arthropods
Administrative data
Link to relevant study record(s)
Description of key information
The 14-day NOEC in earthworms was 1000 mg/kg dry wt soil; the 14-day LC50 was >1000 mg/kg dry wt soil.
Key value for chemical safety assessment
- Short-term EC50 or LC50 for soil macroorganisms:
- 1 000 mg/kg soil dw
Additional information
One toxicity to soil macroorganisms except arthropods study is available for EC# 457-320-2: a 14-day acute study in earthworms, conducted to GLP and in accordance with OECD Test Guideline 207. The earthworms were exposed to artificial soil spiked with EC# 457-320-2 test material (with a molybdenum content of approximately 10%) at nominal concentrations of 0, 62.5, 125, 250, 500 and 1000 mg EC# 457-320-2/kg dry weight of soil.
There were no treatment-related deaths or effects on appearance, behaviour or body weight. Analysis of the earthworms on day 14 of the study showed that tissue levels of molybdenum were below the limit of quantitation of the analytical method. The NOEC was concluded to be 1000 mg/kg dry wt soil; the LC50 was >1000 mg/kg dry wt soil.
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