Registration Dossier

Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

Currently viewing:

Administrative data

Link to relevant study record(s)

Description of key information

EC50 (72 h) > 1000 mg/L and NOEC >= 500 mg/L for Scenedesmus subspicatus based on growth rate (according to OECD 201)

Key value for chemical safety assessment

EC50/LC50 for freshwater algae:
1 000 mg/L
EC10, LC10 or NOEC for freshwater algae:
500 mg/L

Additional information

As no study is available for Blankophor TP 1160 (CAS 1200448-68-5), a read-across is performed to a study conducted with the structural analogue CAS 16470-24-9. This GLP-study on unicellular green algae (Scenedesmus subspicatus) was conducted according to OECD guideline 201 (Ciba-Geigy, BASF SE, 1990). Up to a test item concentration of 500 mg/L (nominal) no effects on the growth of the algae were observed. At the highest test concentration of 1000 mg/L (nominal) 14.4 % inhibition was determined after 72 hours of exposure. Thus, the ErC50 (72h) value on algae growth inhibition is > 1000 mg/L (nominal).