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Ecotoxicological information

Short-term toxicity to fish

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Description of key information

LC50 values of > 100 mg/L were obtained with the test substance in two separated toxicity to fish studies A short-term toxicity to fish study, performed similarly to OECD 203 guideline and a prolonged toxicity test to fish performed similarly to OECD 204 guideline.

Key value for chemical safety assessment

LC50 for freshwater fish:
100 mg/L

Additional information

Acute toxicity test (96 hours) to fish (Japanese killifish (Oryzias latipes)) was assessed similarly to OECD 203 guideline with 100 mg/L of the test substance (limit test). The test substance tends to split immediately to two components in aqueous solution. Its half-life is about 1 hour, and it almost fully decomposes in 5 to 6 hours. Therefore, concentration of the test substance in a test solution was not measured. Thus, the test result was calculated in accordance with a target concentration. Under the test conditions the LC50 (96 h) value obtained was greater than 100 mg/L.

Another test, a prolonged toxicity test to fish (flow-through) was performed with Japanese killifish (Oryzias latipes). The test substance (100 mg/L) was applied for exposure period of 14 days. The test was performed similarly to prolonged fish toxicity test, the OECD 204 guideline. Under the test conditions the LC50 (14 d) value obtained was also greater than 100 mg/L.