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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Administrative data

Link to relevant study record(s)

Description of key information

EC50 (3h): 59.6 mg a.i./L (Activated sludge, Iso Guideline 8192, 1986; Caspers and Müller, 1991)

Key value for chemical safety assessment

EC50 for microorganisms:
59.6 mg/L

Additional information

The effect of Chlorophene (CAS 120-32-1) on aquatic microorganism was investigated by Caspers and Mueller (1991) according to ISO Guideline 8192 (1986) which equals to OECD guideline 209. Activated sludge was used from laboratory sewage treatment plant. Oxygen consumption was used as endpoint over a test period of 3 h with the following test item concentrations: 10, 18, 32, 56 and 100 mg/L. 50% inhibition of microbial activity was determined at EC50 = 59.6 mg a.i./L.