Registration Dossier
Registration Dossier
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EC number: 939-401-9 | CAS number: 1469983-41-2
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
Key study is Brixham Environmental Laboratory (2002). OECD201, Selenastrum capricornutum, static 72 h. Use of vehicle (acetone). Study considered reliable with restrictions. No statistically significant growth effects were observed. End-point concluded on measured concentrations (with the aid of acetone) will not give reliable estimate for derivation of PNEC, since acetone will not be used under normal conditions. Based on mean measured concentrations the ErC50 will be > 0.17 mg/L and NOErC >= 0.17 mg/L.
Key value for chemical safety assessment
Additional information
Guideline & GLP study. Composition given in appendix but batch no not identical to supplier's batch no., no phys-chem data. Analytical method validation is lacking. Due to the use of a vehicle, the results are questionable wrt actual situation when acetone is not involved. pH increase > 1.5 units, no reference substance, no range finder, no analysis of variation of the controls. NOEC value should be >= value, report mentions <=.
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