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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Ecotoxicological information

Toxicity to microorganisms

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Administrative data

Link to relevant study record(s)

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.