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Registration Dossier
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EC number: 209-544-5 | CAS number: 584-84-9
Short-term toxicity to aquatic invertebrates
Administrative data
Link to relevant study record(s)
Description of key information
Acute toxicity against aquatic invertebrates Key study: Tadokoro 1997, daphnia magna (more frequently used than Mysidopsis bahia, better comparability with other chemicals).
Key value for chemical safety assessment
Fresh water invertebrates
Fresh water invertebrates
- Effect concentration:
- 12.5 mg/L
Marine water invertebrates
Marine water invertebrates
- Effect concentration:
- 18.3 mg/L
Additional information
The short-term results show that TDI has low to moderate acute toxicity to freshwater and marine invertebrates. It is highly probable that TDI disappeared from the media soon after addition to water and it is likely that any measured toxic effects were due to the presence of hydrolysis products. In the above studies, where TDA was formed and measured, it should be noted that the concentration levels at the endpoint (5-10 mg/l) are similar to the 24h and 48h LC50 values reported for TDA with invertebrates. Due to the quality of the study and relevance of the organism, the EC50 value of 12.5 mg/L detected for Daphnia magna by Tadokoro et al (1997) is regarded as being the most relevant data point for assessing the acute toxicity of TDI against aquatic invertebrates.
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