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EC number: 290-714-0
CAS number: 90218-39-6
Influence of the test substance on algae growth (cells x 103/ml) during
the test duration of 96 hours.
Influence of the test substance on algae growth (Growth Rate μ
and Percentage Inhibition of μ)
The purpose of this test was to determine the effects of the test
substance on the growth of a unicellular green algal species
(Scenedesmus subspicatus) over several generations. The influence of
test sample on the growth of the green alga Scenedesmus subspicatus
Chodat was investigated in a 96-hour static test according to the OECD
Guideline No. 201, adopted June 7, 1984 and the Draft ISO/TC 147,
submitted June 25, 1987. The test was performed in compliance with the
Good Laboratory Practice Regulations. The nominal concentrations tested
were 62.3, 125, 250, 500 and 1000 mg test substance/1 and a control
without any additions. The test substance has obviously a low inhibition
effect on the growth of Scenedesmus subspicatus. At the highest
concentration tested the algae biomass was inhibited by about 70 %, the
growth rate only by about 19 % at the end of the test. In conclusion the
EC50 (72h) > 1000 mg/l.
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