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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

The lowest threshold level (40-min EC50) was 2590 mg/L in aerobic domestic sludge.

Key value for chemical safety assessment

EC50 for microorganisms:
2 590 mg/L

Additional information

The toxicity of dichloromethane to activated sludge was evaluated by a simple respirometric procedure set up on the basis of OECD Method 209 (Ricco et al., 2004). The exposure duration, however, was only 40 minutes. Several other studies were available; however these studies were either less relevant for toxicity towards STP-organisms or the toxicity values were indecisive (greater than values). Therefore the study by Ricco et al. (2004) was used in the assessment