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Short-term toxicity to fish

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In a 96-hour acute toxicity study, Sheepshead minnow (Cyprinidon variegatus) were exposed to Cardolite NC-603 (Technical Grade) at nominal concentrations of 0 and 1000 mg/L WAF under static conditions.


No mortalities occured at a concentration of 1000 mg/l nominal WAF loading rate and no sub-lethal effects were noted after 96 hours.


The 96-hour LL50was >1000 mg/L nominal WAF.


The study is classified as Klimisch Code 2 (reliable with restriction) as it was performed to an internationally recognised method (OECD 203) and was conducted to Good Laboratory Practice. However, temperature deviations were reported during the acclimisation period, the homogeneity and stability of the test material in the test preparations were not determined and an error in preparation of fresh test media for dosing at 24 hours resulted in a change from a semi-static to static study.