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Ecotoxicological information

Toxicity to soil macroorganisms except arthropods

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Description of key information

Results from the OECD222 study with Eisenia andrei:
28d-LC50 (mortality) >1000mg/kg dry soil
56d-EC10 (reproduction) = 290 mg/kg dry soil
56d-EC50 (reproduction) = 560 mg/kg dry soil  

Key value for chemical safety assessment

Short-term EC50 or LC50 for soil macroorganisms:
1 000 mg/kg soil dw
Long-term EC10, LC10 or NOEC for soil macroorganisms:
290 mg/kg soil dw

Additional information

Following a decision by ECHA a study was performed for Determination of toxicity of sulfamic acid towards reproduction of Eisenia andrei BOUCHÉ in an artificial soil according to OECD 222 using five concentrations ranging from 100 to 1000 mg/kg dry soil. After 28 days, the living adult animals were counted and 28 days later, the number of juveniles produced was determined.

No adult animals were found dead in any treatment or control after the first 28 days test duration. At the two highest concentrations (560 mg/kg and 1000 mg/kg) significant inhibition of reproduction (51% and 87% respectively) was observed.

The following results were determined for the test item sulfamic acid (species: Eisenia andrei).

28d-LC50 >1000mg/kg dry soil

56d-EC10 = 290 mg/kg dry soil

56d-EC50 = 560 mg/kg dry soil