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EC number: 203-929-1
CAS number: 112-03-8
A study was conducted to determine the
toxicity to green algae (Selenastrum capricornutum) of the test
substance according to OECD Guideline 201, in compliance with GLP. In
a range-finding test, algal growth was totally inhibited at nominal test
concentrations of 1, 10 and 100 mg/L. Therefore, in the main test, algae
were exposed for 72 h to nominal concentrations of 0.01, 0.02, 0.04,
0.08 and 0.16 mg a.i./L. Algal cell concentrations were determined
spectrophotometrically. No analytical verification of dose
concentrations was conducted. All the validity criteria of the study
were fulfilled. Under the study conditions, the 72 h EbC50 and ErC50
were 0.05 and 0.08 mg a.i./L, respectively. The NOEC for the effects on
both biomass and growth rate was determined to be 0.04 mg/L (van Ginkel,
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