Registration Dossier
Registration Dossier
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EC number: 946-512-6 | CAS number: -
Toxicity to terrestrial plants
Administrative data
Link to relevant study record(s)
Description of key information
By read-across from C16 TMAB to reaction mass of C12 trimethyl ammonium bromide and C14 trimethylammonium bromide, the toxicity to terrestrial plants is conservatively estimated with an EC50of 0.2 mg/L.
Key value for chemical safety assessment
Additional information
Effect of cetrimonium bromide on growth of duckweed, Spirodela oligorhiza was reported. The tested species is a freshwater plant, but a monocot angiosperm, and therefore physiologically very similar to the standard terrestrial plant species used in toxicity assays, such as wheat and barley. Cetrimonium bromide shows a clear toxic effect, observed as inhibition of growth of the freshwater plant Spirodela oligorhiza. EC50 after 11 days is estimated to 0.2 mg/L. The toxicity of reaction mass of C12 trimethyl ammonium bromide and C14 trimethylammonium bromide can be described by the toxicity of the structurally alike halides of longer alkyl chain i.e. cetrimonium bromide (C16).
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