Registration Dossier
Registration Dossier
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EC number: 924-903-2 | CAS number: 1190401-47-8
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
With high probability not harmful to aquatic algae.
No toxic effects occur at the range of the substances solubility.
EL50 (72h) and EL10 (72h) > 100 mg/L (nominal, WAF) for growth rate of Desmodesmus subspicatus (OECD 201)
Key value for chemical safety assessment
Additional information
In a GLP guideline study following OECD 201 green algae (Desmodesmus subspicatus) were exposed for 72 hours to
Hexamethylene diisocyanate, oligomers, blocked with dibutylamine [BASF SE, 2012]. Based on the low water solubility of the test item the aquatic toxicity was determined by a water accommodated fraction (WAF) with a nominal loading rate of 100 mg/L. No algal growth inhibition was observed in the treatment compared to the control. Thus, the 72-h EL50 and EL10 for growth rate inhibition is determined to be > 100 mg/L based on nominal concentrations.
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