Registration Dossier
Registration Dossier
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EC number: 203-767-1 | CAS number: 110-43-0
Short-term toxicity to fish
Administrative data
Link to relevant study record(s)
Description of key information
A well recognized published study on the acute toxicity of organic chemicals to fathead minnow using flow-through methodology.
Key value for chemical safety assessment
Fresh water fish
Fresh water fish
- Effect concentration:
- 131 mg/L
Additional information
A 96-hour acute toxicity test of 2-Heptanone (CAS 110 -43 -0) was conducted using fathead minnows (Pimephales promelas) in a flow-through diluter system. The test was conducted with 5 exposure concentrations and a control with 20 juvenile fish in each exposure replicate. LC50 (mortlity) values were calculated based upon mean measured exposure concentrations. The 96 -hour LC50 values was estimated to be 131 mg/L. A NOEC value for mortality was not calculated in the study, but as there was no mortality observed in any concentration up to and including the 104 mg/L concentration, the NOEC for mortality can be emperically estimated to be ≥ 104 mg/L.
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