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Short-term toxicity to aquatic invertebrates

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Description of key information

In a key static immobilization test, young Daphnia magna (< 24 h old) were exposed to the surrogate test substance 3-aminopropyldiethylamine for 48 hours according to ISO 6341 15 (Water quality - Determination of the Inhibition of the Mobility of Daphnia magna Straus (Cladocera, Crustacea). The EC50 was determined to be 30.16 mg/L. 

Key value for chemical safety assessment

Fresh water invertebrates

Fresh water invertebrates
Effect concentration:
30.16 mg/L

Additional information

 

In a key static immobilization test, young Daphnia magna (< 24 h old) were exposed to the test surrogate test substance 3-aminopropyldiethylamine for 48 hours according ISO 6341 (Water quality - Determination of the Inhibition of the Mobility of Daphnia magna Straus (Cladocera, Crustacea). The test substance was tested in the range of concentrations between 8.25 mg/L and 8250 mg/L. The concentrations were not measured in the vessels during the test because the surrogate test substance 3-aminopropyldiethylamine was expected to be stable in water. Indeed, the read across substance is miscible in water, its vapor pressure is low and it is not subject to hydrolysis. Therefore there was no cause of significant deviation from nominal to real substance concentrations. The 48h-EC50 of the surrogate test substance 3-aminopropyldiethylamine was determined to be 30.16 mg/L.

In addition to that a supporting study with the read across substance 3-aminopropyldiethylamine to short-term toxicity test to aquatic invertebrates according to EU Directive 79/831/EEC, Annex V, part C on the immobility of Daphnia magna Straus in a 48 hour test was performed. The read across test substance was expected to be stable in water. The EC50 was determined to be 51.8 mg/L. This value is based on not neutralised test solutions.