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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Depending on local conditions and existing concentrations, disturbances in the biodegradation process of activated sludge are possible.
EC20 (30 min) ca. 7 mg/L and EC50 (30 min) ca. 130 mg/L (nominal) for activated sludge (OECD 209)

Key value for chemical safety assessment

Additional information

For the Sulfonium copound mixture the influence on the respiration of microorganisms was investigated in a GLP guideline study according to OECD 209 (Activated Sludge, Respiration Inhibition Test) [BASF AG, 2003]. The study was conducted with activated sludge from laboratory wastewater plants treating municipal sewage. After 30 minutes of incubation the EC20 was ca. 7 mg/L and the EC50 was ca. 130 mg/L based on nominal concentration.