Registration Dossier

Ecotoxicological information

Endpoint summary

Administrative data

Description of key information

Additional information

LC50(96h) Oncorhynchus mykiss = 63 mg/L (measured)

EC50(48h) Daphnia magna = 39 mg/L (nominal)

ErC50(72h) Desmodesmus subspicatus = 26 mg/L (measured); NOECr(72h) Desmodesmus subspicatus = 6 mg/L

 

No chronic data on tBMA is available. However, for the structurally related nBMA (97-88-1) reliable chronic tests were conducted on Daphnia magna, indicating no chronic hazard.

NOECreproduction(21d) Daphnia magna = 1.1 mg/L (measured)

NOECreproduction(21d) Daphnia magna = 2.6 mg/L (measured)

 

Furthermore, nBMA shows no harmful effects towards aquatic microorganisms (EC20 = ca. 1000 mg/L, domestic activated sludge, OECD TG 209). Therefore, the inhibition of the degradation activity of activated sludge is not anticipated when tBMA is introduced into biological treatment plants in appropriately low concentrations.