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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

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Description of key information

The toxicity to microorganisms, of DVS005u was determined to be EC50 > 320 mg/l and NOEC 320 mg/L according to a study performed in line with GLP and to the standardised guidelines OECD 209 and EU Method C.11.

Key value for chemical safety assessment

EC50 for microorganisms:
320 mg/L
EC10 or NOEC for microorganisms:
320 mg/L

Additional information

The key study (Youngs, 2010) was conducted in line with GLP and standardised guidelines with a sufficient level of detail to assess the quality of the study. Activated sludge from a predominantly domestic sewage was exposed to the test material at the nominal concentration of 10, 32, 100, 320 and 1000 mg/l. The test was performed under static freshwater conditions with an exposure time of 3 hours. The EC50 and the NOEC were determined to be > 320 and 320 mg/l respectively according to the respiration rate. The study was performed to a good standard and was assigned a reliability score of 1 using the principles for assessing data quality as set out in Klimisch (1997).