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EC number: 201-549-0
CAS number: 84-65-1
Short-term toxicity to invertebrates:EC50 (48h): > 48 µg/L for Daphnia magnaEC50 (48h): > 17 µg/L for Crassostrea virginica
studies are waived because of high insolubility of anthraquinone in
are two reliable acute toxicity studies available - one for freshwater
invertebrates and one for marine invertebrates, where selection of the
test concentrations was based on the limit of water solubility of
Anthraquinone in water.
toxicity study with Daphnia magna no immobilization or adverse effects
were observed among daphnids at all treatment levels of Anthraquinone
tested. Based on these data, it was established that under the
conditions maintained during this study (e.g., water quality, solution
temperature, solvent concentration, and mixing period), Anthraquinone is
not acutely toxic to Daphnia magna at and below the material's
limit of water solubility.
marine water toxicity study with Eastern oyster, comparison of
biological response data did not establish a concentration-effect
relationship within the concentration range tested, shell deposition
reduction ranging from 15 to 25 percent was observed. Shell deposition
reduction among oysters exposed to the highest mean measured test
concentration of 17 µg A.I./L was 15%. The 96 hour EC50 was therefore
empirically estimated to be > 17 µg A.I./L, the highest concentration of
Anthraquinone that could be solubilized in seawater under the conditions
maintained during this study (e.g., water quality, solution temperature,
solvent concentration, mixing period).
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