Registration Dossier
Registration Dossier
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EC number: 202-679-0 | CAS number: 98-54-4
Long-term toxicity to aquatic invertebrates
Administrative data
Link to relevant study record(s)
Description of key information
ptBP affected the reproductive output of Daphnia magna with an estimated EC50 (21-d) value of 2.0 mg/L. The NOEC and LOEC values were reported to be 0.73 and 2.3 mg/L (based on nominal concentrations), respectively.
Key value for chemical safety assessment
Fresh water invertebrates
Fresh water invertebrates
- Effect concentration:
- 0.73 mg/L
Additional information
In a 21 -day reproduction study with Daphnia Magna, conducted in accordance with the OECD Guidelines for Testing of Chemicals No. 202, daphnids were exposed to ptBP at concentrations ranging from 0.073 to 7.3 mg/L, under semi-static conditions (EPA of Japan, 1995). The 21 d-EC50 value was determined to be 2.0 mg/L, based on nominal concentrations, while the NOEC and LOEC were 0.73 and 2.3 mg/L, respectively. A mixture of DMSO and HCO-40 was used as a solubilizer.
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