Registration Dossier
Registration Dossier
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EC number: 906-627-4 | CAS number: -
Short-term toxicity to fish
Administrative data
Link to relevant study record(s)
Description of key information
The toxicity of the mixture of both components is assumed to be in the same range as for the single components (LC50 (96 h)>= 527 mg/l
Key value for chemical safety assessment
Fresh water fish
Fresh water fish
- Dose descriptor:
- LC50
- Remarks:
- based on the toxicity of the single components
- Effect concentration:
- >= 527 mg/L
Additional information
The short term toxicity of the single components of the test item was assessed in two different experimental studies with the Fathead minnow according to the test method of the U.S. EPA Committee on Methods for Toxicity (1975) for 96 h. The LC50 (96 h) was 704 mg/l for cyclohexanol (Brooke, 1984) and 527 mg/l respectively 732 mg/l for cyclohexanone (two tests were performed under the same conditions) (Brooke, 1984).
These values for cyclohexanone are supported by the study of Juhnke & Luedemann, 1978. Two studies according to the German standard procedures for water, sewage and sludge investigations, part L15: fish test were conducted at two different testing facilities under comparable conditions with the test organism Leuciscus idus for 48 h. The LC50 (48 h) was 536 mg/l in the first test and 752 mg/l in the second test.
The toxicity of the mixture of both components is assumed to be in the same range as for the single components (LC50 (96 h) >= 527 mg/l
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