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Ecotoxicological information

Toxicity to microorganisms

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Link to relevant study record(s)

Description of key information

Information was available for one stream within this Category in relation to the toxicity to micro-organisms. This provided a 180 minute EC50 of 470 mg/L.

Key value for chemical safety assessment

EC50 for microorganisms:
470 mg/L

Additional information

A study by BASF (2007) was available for the stream 85117-10-8. This is a GLP compliant, guideline study and is considered adequate for assessment. Effect concentrations of Rohnaphthalin on oxygen consumption by activated sludge in the Activated Sludge respiration Inhibition test at 180 min were: EC10 220 mg/L nominal; EC20 290 mg/L nominal; EC50 470 mg/L nominal; EC80 770 mg/L nominal. The data from this stream will be used to read across to other members of this category.