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EC number: 907-672-2
CAS number: -
In a test performed according to OECD guideline 202 Daphnia magna were
exposed to dibutyl phenyl phosphate using a Water Accomodated Fraction
approach, the 48 hr EL50 of DBPP for Daphnia magna was shown to be 1.4
mg/L (95% CI: 1.3 - 1.5 mg/L).
Different tests assessing the acute aquatic toxicity towards Daphnia magna are available (Goodband and Mullee, 2011; McAllister et al., 1978; Heidolph et al., 1982; LeBlanc, 1980). The most recent study was determined as the Key study with an EL50 (48h) of 1.4 mg/L as this study is performed according to the most recent guidelines.
Short-term toxicity tests (48h LC50) on Daphnia magna are available in
which different conditions are evaluated (different types of water, with
or without food). The most recent study (Goodband and
Mullee, 2011) is regarded as the key study as this study was performed
according to the most recent guidelines. The EL50 value reported in this
study was not the lowest in comparison to the other studies, however it
can be regarded as the most thrust worthy result. Additionally, although
a Water Accomodated Fraction was used, based on the water solubility of
the substance, the EL50 can be regarded as equal to the EC50.
Nevertheless, all LC50 values reported in the other studies (McAllister
et al., 1978; Heidolph et al., 1982 and LeBlanc, 1980) all presented
EC50 values within a similar range of toxicity. The average EC50 over
all tests was 1 mg/L.
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