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EC number: 201-622-7
CAS number: 85-68-7
The NOEC of the test substance to Mysidopsis bahia is 0.075 mg/L.
Two studies of the chronic toxicity of benzyl butyl phthalate to Daphnia
magna are available. Both are useable as key studies for
the fulfilment of this endpoint.
Rhodes et al. (1995) performed a 21 day flow-through test. The NOEC,
based upon mortality and reproduction of the daphnids was 0.28 mg/L (the
LOEC was 1.4 mg/L).
EG&G Bionomics (1979) performed a two-generation 42 day flow through
test. The NOEC, based upon mortality and reproduction of the daphnids
was 0.26 mg/L. Effects were seen at the 0.76 mg/L level.
number 86 -7 -2074) report the 28 day NOEC of the substance to the shrimpMysidopsis
bahiais 0.075 mg/L. This relates to the reproduction of the mysids.
This study has not been reviewed. However the study, and its result, are
considered valid in the BBP EU RAR and has been used in this reliable
document as the critical result for determining PNECs. Therefore this
result will be used in the environmental assessment as it is the most
sensitive chronic result for invertebrates.
Data from review articles from Staples (1997) and Gledhill (1980)
reviews can be used as supporting studies. These report NOECs for
Daphnia magna of 0.35 and 0.26 mg/L respectively.
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