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Short-term toxicity to aquatic invertebrates

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One short-term toxicity test with aquatic invertebrates is available for N-C16-18-alkyl-(even numbered, C18 unsaturated) trimethylpropane-1,3 -diamine. The EC50 observed in this study is ,,, mg a.i./L based on based on geometric mean measured concentrations.  This observed short term (48h) EC50 is in good agreement with the long term (21d) EC50 for reproduction of ,,,,,mg a.i./L based on time weighted mean measured concentrations

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One short-term toxicity test with aquatic invertebrates is available for N-C16-18-alkyl-(even numbered, C18 unsaturated) trimethylpropane-1,3 -diamine. An acute immobilization test to Daphnia magna was conducted in accordance with OECD test guideline and with the OECD Principles of Good Laboratory Practice.

The toxicity of N-C16-18-alkyl-(even numbered, C18 unsaturated) trimethylpropane-1,3 -diamine to juvenile daphnids was determined in a static system over an exposure period of 48 hours. Nominal concentrations ,,,,,,, and ,,,,, mg/Lwere tested including the required control group.

The 48 h NOEC of N-C16-18-alkyl-(even numbered, C18 unsaturated) trimethylpropane-1,3 -diamine was determined as 0.,,,, mg/L and the 48 h LOEC was determined as 0.,,,mg/L. The 48 h EC50 was calculated as 0.,,,, mg/L based on geometric mean measured concentrations. The N-C16-18-alkyl-(even numbered, C18 unsaturated) trimethylpropane-1,3 -diamine test concentration did not remain stable during the study but could still be accurately measured at the end of the test. Geometric mean concentrations were therefore calculated and used for the endpoint calculations.