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EC number: 203-907-1
CAS number: 111-78-4
RESULTS: EXPOSED AND CONTROL
- Cell density data:
Cells/ml after 0; 24; 48; 72 hours (mean)
Control: 2; 1; 18; 50 (x 10,000)
0.63 mg/l: 2; 2; 19; 54 (x 10,000)
1.79 mg/l: 2; 3; 21; 47 (x 10,000)
2.36 mg/l: 2; 3; 21; 56 (x 10,000)
6.56 mg/l: 2; 0; 4; 19 (x 10,000)
The growth inhibition of 1,5 -cyclooctadiene on the alga Scenedesmus
subspicatus was evaluated in a 72 -h growth inhibition test by Hüls
AG (1998) according to EU Method C.3. Seven concentrations ranging from
0.13 mg/L to 12.5 mg/L (nominal) were tested. The following endpoints
EbC50 (72 hours): 4.61 mg/L
ErC50 (72 hours): >6.56 mg/L
NOEC (72 hours, based on cell numbers): 2.36 mg/L
The toxicity endpoints were caclulated on the basis of geometrical mean
concentrations of the measured test substance concentrations at 0 and 72
hours. The study was assessed as "reliable without restrictions".
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