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EC number: 442-390-9
CAS number: 40573-09-9
48-hr EC50, mortality, of MV 31 to Daphnia magna: >91 µg/L (measured) (OECD 202). Loading rate of 4 g/L.
MV 31 was studied in a two tests conducted under OECD 202. This
substance is volatile and of low water solubility. In the key study, a
limit test, nine dead organisms out of 30 were found. However,
undissolved material was present in the test vials to maintain stable
concentrations of the substance. Eight of the nine dead organisms were
trapped at the surface of the undissolved material. The test is unable
to distinguish whether mortality was due to toxicity or a physical
effect. Another study was disregarded since MV 31 cannot be guaranteed
to have been present in test chambers during the test. Test chambers
were left open during the test, and MV 31 could not be detected in test
solutions at test initiation.
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