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Ecotoxicological information

Toxicity to microorganisms

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Description of key information

NOEC (3 h) 100 mg/L for activated sludge microorganisms (OECD 209)

Key value for chemical safety assessment

EC10 or NOEC for microorganisms:
100 mg/L

Additional information

One study is available investigating the effects of Milori blue (CAS 25869-00-5) to activated sludge microorganisms according to OECD 209 (GLP; Sipos, 2010). Five concentrations up to a nominal concentration of 1000 mg/L were tested in the study. After 3 h the respiration rate was measured resulting in a NOEC of 100 mg/L and an EC10 > 100 mg/L.

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