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EC number: 201-071-2 | CAS number: 77-94-1
The toxicity to aquatic invertebrates was assessed in a test with Daphnia magna according to OECD 202 (2010):EC50 (48h) = 66.89 mg/LNOEC (48h) = 45 mg/LLOEC (48h) = 100 mg/L
The acute toxicity to aquatic invertebrates of tributyl citrate was tested according to OECD Guideline 202 and EU Method C.2 in a static 48-hour immobilisation limit test with Daphnia magna STRAUS as test organisms (2010). The study was conducted under certificated GLP compliance. The concentrations that have been tested were 100, 45, 21, 9.4 and 4.3mg test item/L (nominal) and a control (test water without addition of the test item). The immobility of the Daphnia (20 daphnids per control and test concentration) was determined by visual observation after 24 and 48 hours, those animals not able to swim within 15 seconds after gentle agitation of the test beaker were considered to be immobile (even if they could still move their antennae). After 48 hours of exposure no immobilisation of the test animals was observed in the control and up to and including the test item concentration of 45 mg/L. At the concentration of 100 mg/L all animals were immobile. The 48-hour NOEC was determined to be 45 mg test item/L. The 48-hour LOEC was determined to be 100 mg test item/L. The 48-hour EC50 value was determined to be 66.89 mg test item/L.
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