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EC number: 202-476-7
CAS number: 96-09-3
Data from an OECD guideline study 202 on Daphnia magna are available.
In the study performed according to the OECD
Guideline 202 (April 13, 2004) the 48h acute toxicity of styrene oxide
to Daphnia magna was studied under semi-static conditions.
Daphnids were exposed to control, reference control, and test substance
for 24 and 48 hours. Initial concentrations at 10, 22, 46 and 100 % of
the WSF slightly decreased during the renewal periods (58-89 % of
initial). Given these results, effect parameters were based on the
average exposure concentrations that were calculated to be 4.3, 11, 20
and 47 mg/L.
Immobilization was observed at test
48h-EC50 of styrene oxide was 13 mg/L based on average exposure
concentrations (95 % confidence interval between 12 and 16 mg/L).
Marine water invertebrates
No data available
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