Registration Dossier
Registration Dossier
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EC number: 421-140-2 | CAS number: -
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
72h-EC50 > 81.4 mg/L (both for biomass and growth rate)
72h-NOEC >= 81.4 mg/L (both for biomass and growth rate)
Key value for chemical safety assessment
Additional information
Only one study is available assessing the effect of RSS-4, dry substance on the growth of algae. This study (rated K1) is performed in 1997 according to internationally accepted methods and in compliance with the criteria of GLP.
In this key study, the effects of RSS-4 on the growth of unicellular green alga Selenastrum capricornutum (CCAP No. 278/4) have been determined over a period of 96 hours. Exposure of Selenastrum capricornutum to RSS-4 at a mean measured level of 81.4 mg/L did not result in a significant reduction of either the average specific growth rates or the mean biomass values compared to control cultures.
RSS-4 was not considered toxic to S.capricornutum when dissolved in water at 81.4 mg/L (measured concentration).
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