Registration Dossier

Ecotoxicological information

Toxicity to microorganisms

Currently viewing:

Administrative data

Link to relevant study record(s)

Description of key information

Toxicity to microorganisms testing is waived for 2-hydroxyethyl methacrylate since it is classified as readily biodegradable at an application concentration (100 mg/L) which is greater than the predicted environmental concentration (PEC) in the influent of the sewage treatment plant (STP).

Key value for chemical safety assessment

Additional information

The substance (2-hydroxyethyl methacrylate) is classified as readily biodegradable at an application concentration (100 mg/L) which is greater than the predicted environmental concentration (PEC) in the influent of the sewage treatment plant (STP). According to Column 2 of REACH Annex VIII requirements, toxicity to microorganisms testing does not need to be conducted if the substance is readily biodegradable and the applied test concentrations are in the range of concentrations that can be expected in the influent of a sewage treatment plant. Hence, toxicity to microorganisms testing can be waived for 2-hydroxyethyl methacrylate. The PNEC STP wasderived from the available ready biodegradation test data(MITI, OECD 301C).