Registration Dossier
Registration Dossier
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EC number: 269-665-4 | CAS number: 68308-74-7
Short-term toxicity to fish
Administrative data
Link to relevant study record(s)
Description of key information
The 96-hour LL50 for DMATO was found to be >1.0 mg/L.
Key value for chemical safety assessment
Fresh water fish
Fresh water fish
- Effect concentration:
- 1 mg/L
Additional information
A study was performed to assess the acute toxicity of DMATO to rainbow trout (Oncorhynchus mykiss). Due to the low aqueous solubility and complex nature of the test item for the purposes of the test the test item was prepared as a Water Accommodated Fraction (WAF). The test was conducted according to the threshold approach recommended by ECHA. Using this approach the lowest EL50value from an Algal Growth Inhibition test or Acute Toxicity to Daphnia magna study is set as the threshold concentration and a "limit test" is conducted at this threshold concentration.
Seven fish were exposed to a Water Accommodated Fraction (WAF) of the test item, at a single nominal loading rate of 1.0 mg/L for a period of 96 hours at a temperature of 14°C to 15 °C under semi-static test conditions.
There were no mortalities in 7 fish exposed to a 1.0 mg/L loading rate WAF for a period of 96 hours. Hence, the 96-hour LL50 was determined to be >1.0 mg/L and the NOEL was found to be 1.0 mg/L. In addition to this, there were no sub-lethal effects of exposure observed in the test.
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