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Ecotoxicological information

Endpoint summary

Administrative data

Description of key information

LC50 (96 h) > 100 mg/L (nominal) for Oncorhynchus mykiss (OECD 203)

EC50 (48 h) > 100 mg/L (nominal) for Daphnia magna (OECD 202)

EC50 (72 h, growth rate) = 5.3 mg/L (mean measured) for Pseudokirchneriella subcapitata (OECD 201)

NOECr (72 h, growth rate) = 1 mg/L (nominal) for Pseudokirchneriella subcapitata (OECD 201)

EC50 (3 h, total, heterotrophic and nitrification respiration) > 1000 mg/L (nominal) for activated sludge (OECD 209)

NOEC (3 h, total, heterotrophic and nitrification respiration) ≥ 1000 mg/L (nominal) for activated sludge (OECD 209)

Additional information

The aquatic toxicity of 2-{2-chloro-4-mesyl-3-[(tetrahydrofuran-2-lmethoxy)methyl]benzoyl}cyclohexane-1,3-dione was tested in four studies with organisms of different trophic levels (M-446236-01-1 (2013); M-212589-01-1(2003); M-116272-01-1(2003); M-287714-01-1 (2007); M-570517-01-1; 2016). All studies were conducted under GLP and according to the respective OECD guidelines. The results of these tests are summarised in the table below:

Test species

Test system

Test duration (h)

Effect values (mg/L)

Reference

Oncorhynchus mykiss

Semi-static acute

96

LC50 > 100

2013; M-446236-01-1

Daphnia magna

Static acute

48

EC50 > 100

2003; M-212589-01-1

Pseudokirchneriella subcapitata

Static acute/chronic

72

ECr50 = 5.3

NOECr = 1.0

2003; M-116272-01-1

2007; M-287714-01-1

Respiration and nitrification inhibition test with activated sludge

Static acute/chronic

3

EC50 > 1000

NOEC ≥ 1000

2016; M-570517-01-1