Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Currently viewing:

Administrative data

Link to relevant study record(s)

Description of key information

In a valid OECD 201 GLP study on Isodecyl methacrylate, the 72h-NOEC-values for inhibition of specific growth rate of freshwater algae (Desmodesmus subspicatus) after 72 h was 12.0μg/L. The according 72h-EC50-value after 72 h was > 16.9 μg/L. 

Key value for chemical safety assessment

EC50 for freshwater algae:
16.9 µg/L
EC10 or NOEC for freshwater algae:
12 µg/L

Additional information

In a fully valid GLP study according to OECD 201, Isodecyl methacrylate was found to inhibit the growth of the freshwater green alga Desmodesmus subspicatus after 72 h.

The NOEC-values for inhibition of specific growth rate and inhibition of yield after 72 h were 12.0 and 9.20 μg/L, respectively. The LOEC-values for inhibition of specific growth rate and inhibition of yield after 72 h were 16.9 and 12.0 μg/L, respectively. The EC50-values for inhibition of specific growth rate (ErC50) and yield (EyC50) after 72 h were > 16.9 and 14.1 (12.6 – 16.1) μg/L, respectively. All effect levels are given based on geometric mean measured concentrations.