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EC number: 205-250-6
CAS number: 136-52-7
Relevant and reliable data that
could be used for classification for freshwater invertebrates were
retrieved for 10 different species. The LC50s ranged from 0.61 mg Co/L
for the cladoceran, Ceriodaphnia dubia to 7219 mg Co/L for Brachycentrys
americansus. Relevant and reliable data that could be used for
classification for marine invertebrates were retrieved for 4 different
species. The LC50s ranged from 2.32 mg Co/L for the sand dollar, Dendraster
excentricus to 3.70 mg Co/L for the pacific oyster, Crassostrea
sp. Test results were obtained in experiments that followed
international accepted guidance and were based on measured levels of
dissolved cobalt as cobalt chloride.
the database of acute cobalt toxicity to freshwater invertebrates, 41
individual LC50 values for 10 different individual species were
reported. The LC50s ranged from 0.61mg Co/Lfor the cladoceran, Ceriodaphnia
dubia tested in soft, dissolved organic matter-free water (CDI,
2005) to 7219 mg Co/L for the midge, Brachycentrus americansus (Pacific
EcoRisk, 2005). No freshwater acute invertebrate toxicity studies were
used to derive the HC5 and freshwater PNEC.
the database of acute cobalt toxicity to marine invertebrates, 4 LC50
values are reported for 4 species. The values range from 2.32 mg Co/L
for the sand dollar, Dendraster excentricus (CDI 2010c) to 2.62
for Mytilus sp. (CDI 2010a), to 2.83 for Stronglyocentrotus
purpuratus (CDI 2010d)and 3.70 mg Co/L for the pacific oyster, Crassostrea
short-term marine aquatic invertebrate tests are used in the marine PNEC
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