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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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 this study 2,2’-(Octylimino)bisethanol was found to inhibit the growth of the freshwater green alga Desmodesmus subspicatus after 72 hours. The NOEC-values for inhibition of growth rate and inhibition of yield after 72 hours were 0.253 and 0.0800 mg/L, respectively . The LOEC-values for inhibition of growth rate and inhibition of yield after 72 hours were 0.800 and 0.253 mg/L. The EC50-values for inhibition of growth rate (ErC50) and yield (EyC50) with 95 % confidence intervals after 72 hours were 1.35 (1.30 – 1.41 and 0.397 (0.363 – 0.433) mg/L, respectively. All effect levels are given based on nominal concentrations of 2,2’-(Octylimino)bisethanol.

Key value for chemical safety assessment

EC50 for freshwater algae:
1.35 mg/L
EC10 or NOEC for freshwater algae:
0.402 mg/L

Additional information

In this study 2,2’-(Octylimino)bisethanol was found to inhibit the growth of the freshwater green alga Desmodesmus subspicatus after 72 hours. The NOEC-values for inhibition of growth rate and inhibition of yield after 72 hours were 0.253 and 0.0800 mg/L, respectively . The LOEC-values for inhibition of growth rate and inhibition of yield after 72 hours were 0.800 and 0.253 mg/L. The EC50-values for inhibition of growth rate (ErC50) and yield (EyC50) with 95 % confidence intervals after 72 hours were 1.35 (1.30 – 1.41 and 0.397 (0.363 – 0.433) mg/L, respectively. All effect levels are given based on nominal concentrations of 2,2’-(Octylimino)bisethanol.