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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

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Administrative data

Link to relevant study record(s)

Description of key information

EC50 (72h) > 0.025 (Desmodesmus subspicatus)
NOEC (72h) = 0.025 (Desmodesmus subspicatus)

Key value for chemical safety assessment

Additional information

In a 72 hour experimental laboratory study by Vryenhoef (2009) the influence of Di-2-EHTDG on the growth rate of the freshwater green alga Desmodesmus subspicatus was determined in accordance with OECD TG 201. The resulting 72h EC50 value for growth inhibition based on geometric mean measured concentrations was >0.025 mg/L. Based on geometric mean measured concentrations the NOEC was 0.025 mg/L.