Registration Dossier

Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

Currently viewing:

Administrative data

Link to relevant study record(s)

Description of key information

A study was conducted to determine the toxicity of the test substance to aquatic algae. Exposure of Pseudokirchneriella subcapitata to the test item gave ErC50 values of greater than 100 mg ns/L. The 72 hours NOEC was 100 mg ns/L.

Key value for chemical safety assessment

EC50/LC50 for freshwater algae:
100 mg/L
EC10, LC10 or NOEC for freshwater algae:
100 mg/L

Additional information

A GLP study following the OECD 201 guideline was conducted to determine the toxicity of the test substance to aquatic algae (Huntsman, 2012g). Pseudokirchneriella subcapitata was exposed to the test substance at 100 mg notifiable substance (ns)/L (six replicate flasks) for 72 hours, under constant illumination and shaking at a temperature of 24 ±1 °C. During this time, the cell density of the algae was measured. The 72 hours NOEC was 100 mg ns/L. The 72hours EC50 was greater than 100 mg ns/L, based on growth rate.