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EC number: 420-380-5
CAS number: 136465-81-1
No further details were provided.
The study procedure described was performed on the basis of EC directive
92/69/EEC, C. 3 (1992) and OECD guideline No. 201 (1984).
PTH-Decahydroamide (Ro 31-9373/000) inhibited cell growth and reduced
growth rate of Scenedesmus subspicatus significantly under the
conditions of the present study at nominally 10 mg/l and higher. The
inhibition rates were estimated for both the algal biomass b and the
growth rate R after 72 hours test duration; based on nominal
EbC50 (0-72 h) 46 mg/l
ERC50 (0-72 h) 74 mg/l
The NOEC was 4.8 mg/l for both cell growth inhibition and growth rate
reduction when based on nominal concentrations. Since this concentration
was below the detection limit of PTH-decahydroamide (Ro 31-9373/000) in
water samples, no actual concentration could be determined.
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