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Registration Dossier
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EC number: 202-943-5 | CAS number: 101-43-9
Short-term toxicity to aquatic invertebrates
Administrative data
Link to relevant study record(s)
Description of key information
Cyclohexyl methacrylate is acutely harmful to freshwater invertebrates. An EC50(48h) Daphnia magna of 33.9 mg/L (measured) was determined.
Key value for chemical safety assessment
Fresh water invertebrates
Fresh water invertebrates
- Effect concentration:
- 33.9 mg/L
Additional information
An acute toxicity study was conducted with Daphnia magna (BASF SE, 2004) according to OECD Guideline 202 using a static design. The test was performed with an aqueous extract (eluate) using a closed system (glass tubes sealed with gas impermeable Teflon caps). Nominal exposure concentrations were: 0, 12.5, 25, 50 and 100 mg/L. The analytical recovery after 0 hours was 74.2 - 75 % in all analysed test solutions and after 48 hours 67.6 - 71.1 %. The 48-hour EC50 value for immobilization was established as 33.9 mg/L based on mean measured concentrations.
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