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EC number: 939-478-9
CAS number: -
The 72h-EC50 and NOEC for growth rate reduction were above the solubility limit of the test substance in medium (which is < 8 µg/L) of URACROSS ZW7672P, Product ID 021116/000 in test medium.
In a 72h toxicity study conducted according to OECD guideline 201,
freshwater algae (Pseudokirchneriella subcapitata) were exposed to the
registered substance URACROSS ZW7672P, Product ID 021116/000 at the
following nominal concentrations: 0 (blank-control) and a water
accomodated fraction (WAF) at a loading rate of 1 mg/L. The
concentration of test substance in samples taken from the limit
concentration (1 mg/L) was below the limit of detection of the
analytical method (LOD=0.008 mg/L) at all sampling points (i.e. t = 0h;
t = 24h and t = 72h). The 72-h EC50 and NOEC for growth rate reduction
were above the solubility limit of the registered substance URACROSS
ZW7672P, Product ID 021116/000 in test medium. As no effects were
observed at a loading rate of 1 mg/L, it can be concluded from the study
that there is no acute toxicity to algae below the solubility of the
substance in test medium and the study is still considered reliable with
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