Registration Dossier
Registration Dossier
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EC number: 209-548-7 | CAS number: 585-07-9
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)
and MMA (80-62-6) reliable chronic tests were conducted on Daphnia
magna, indicating no chronic hazard. For MMA a supporting chronic test
with Danio rerio was also conducted.
nBMA:
NOECreproduction(21d) Daphnia magna = 1.1 mg/L (measured)
NOECreproduction(21d) Daphnia magna = 2.6 mg/L (measured)
MMA:
NOECreproduction(21d) Daphnia magna = 37mg/L (measured /geometric mean)
NOEC (35d) Danio rerio = 9.4 mg/L (nominal)
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.
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