4-[(1-butyl-5-cyano-1,6-dihydro-2-hydroxy-4-methyl-6-oxo-3-pyridyl)azo]-N-(2-ethylhexyl)benzenesulphonamide

Endpoint summary

Additional information

Overview of aquatic toxicity data available for the substance:

Study	Species	Guideline	Endpoint	Effect value *
Short-term toxicity to fish	D. rerio	OECD 203 (flowthrough)	96-h LC50	0.145 µg/L (measured)
Long-term toxicity to fish	-	-	-	-
Short-term toxicity to aquatic invertebrates	D. magna	OECD 202 (static)	48-h EC50	>100 mg/L (loading rate)
Long-term toxicity to aquatic invertebrates	-	-	-	-
Toxicity to aquatic plants other than algae *	L. gibba	OECD 221 (flowthrough)	72-h ErdwC50 72-h ErC50	>0.735 µg/L (measured) >0.735 µg/L (measured)
Toxicity to microorganisms	Activated sludge (domestic)	OECD 209 (static)	3-h EC10 3-h EC50	>1000 mg/L (loading rate) >1000 mg/L (loading rate)

* A 7-d Lemna growth test instead of an algal growth test was performed as the substance is coloured.