Registration Dossier

Ecotoxicological information

Toxicity to soil macroorganisms except arthropods

Currently viewing:

Administrative data

Link to relevant study record(s)

Description of key information

Roberts and Dorough (1984) found that the cyclohexane's 48hour LC50 for Eisenia fetida is >1000µg.cm-2. The TLM-EqP modeling has been validated as a suitable method for predicting effect values in sediment and soil organisms. The TLM-EqP predicted effect values for cyclohexane were 59.943 and 11.483 mg/kg soil dw for short-term (28 -day LC50) and long-term effects (56-day EC10), respectively.

Key value for chemical safety assessment

Short-term EC50 or LC50 for soil macroorganisms:
59.943 mg/kg soil dw
Long-term EC10, LC10 or NOEC for soil macroorganisms:
11.483 mg/kg soil dw

Additional information

The TLM-EqP modeling has been validated as a suitable method for predicting effect values in sediment and soil organisms. The TLM-EqP predicted effect values for cyclohexane were 59.943 and 11.483 mg/kg soil dw for short-term (28 -day LC50) and long-term effects (56-day EC10), respectively.

The study selected as key, Roberts and Dorough, 1984, is equivalent to screening test for OECD 207, uses standard species (Eisenia foetida) and standard exposure duration and method. The artificial soil test (OECD 207) does not need to be carried out as the screening test did not indicate levels of toxicity requiring further investigation. The reported 48 hour LC50 was >1000 µg.cm-2. No other studies were identified for this endpoint.