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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Ecotoxicological information

Endpoint summary

Administrative data

Description of key information

Additional information

The test substance is acutely toxic to aquatic organisms.

The inhibition of the degradation activity of activated sludge is not anticipated when introduced in appropriate low concentrations.

Since no test data for acute toxicity on fish are available a conclusion by analogy approach to Oeltriamid (CAS 16445-04-5) has been applied. In an acute fish test with the analogue substance according to OECD guideline 203, the LC50 (96h) with the test fish Brachydanio rerio was determined to be 22 mg/L [BASF, 1993].

The acute toxicity of the test substance to aquatic invertebrates has been examined in a GLP guideline study according to OECD 202 with Daphnia magna [BASF AG 1999]. At test termination after 48 h an EC50 of 2.68 mg/L (nominal) was determined.

The acute toxicity to algae was investigated in a GLP test according to OECD guideline 201 with Desmodesmus subspicatus as test organism [BASF SE 2013]. After an exposure period of 72 h an ErC50 of 14.7 mg/L (nominal) and an ErC10 of 2.94 mg/L (nominal) was determined.

The acute toxicity of the test substance to microorganisms has been examined in a GLP guideline study according to OECD 209 [BASF AG 1998]. At test termination after 30 minutes, an EC20 of ca. 130 mg/L (nominal) was derived.

Due to missing analytical measurements the assessment of the aquatic toxicity in the range of solubility is not possible. The effect concentrations determined in the tests can be used as a worst case.

The chronic effects of the test substance has been assessed in a 21-day toxicity study with Daphnia magna. The test organisms were exposed to the test substance at nominal concentrations of 0 (control) and 10 mg/L under semi-static conditions in accordance with the OECD guideline 211 [BASF SE 2013]. No effects on mortality and reproduction or any adverse effects on additional endpoints were observed in any of the test treatments at test termination. Thus, the NOEC was determined to be >= 10 mg/L (nominal).

Long-term toxicity testing with fish has not been performed.