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Ecotoxicological information

Toxicity to soil macroorganisms except arthropods

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Description of key information

LC50 (14 d) > 3000 mg/kg soil dw

Key value for chemical safety assessment

Short-term EC50 or LC50 for soil macroorganisms:
3 000 mg/kg soil dw

Additional information

A study is available on the similar substance CAS 4193-55-9, to assess the acute toxicity of the substance to terrestrial macroorganisms. The LC50 value in Eisenia foetida according to OECD 207 was greater than 5000 mg/kg dry weight (Solvias AG., 1999). The reliability is low because just the summary is actually available.

 

Nevertheless the study is supported by the test on the similar substance of the Stilbene Fluorescent Whitening Agents: the analogous dihydroxyethyl derivative tetrasulphonated sodium salt CAS 16470-24-9, for which also a summary for the same test is available (Solvias AG., 1999).The category Justification Report is attached to the section 13.

 

No concern for soil toxicity is then arisen by the presented acute studies. The most conservative value recorded is used for the risk assessment.