Registration Dossier
Registration Dossier
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EC number: 206-768-5 | CAS number: 373-61-5
Toxicity to aquatic plants other than algae
Administrative data
Link to relevant study record(s)
Description of key information
Key value for chemical safety assessment
Additional information
In water, the acetic acid - boron trifluoride complex rapidly decomposes to form acetic acid and boron trifluoride dihydrate. The latter reacts further to boric acid and fluoroboric acid, which finally hydrolyses to yield hydrofluoric acid/ fluoride ions. Studies reviewed in the EU Risk Assessment Report for boric acid were therefore considered relevant.
Studies of the reed Phragmites australis reported no effects in long term tests (4 months to 2 years) ranging from 0.7 to 4 mg-B/L (Guhl 1992a, Bergman et al. 1995, Guhl 2000). Although these studies can be considered reliable, the lack of an exposure showing adverse effects (i.e. a LOEC) precludes their results from being described as NOEC values. Guhl (1992a) uses the term “concentration without effect” to describe the endpoint where no effect was observed at the highest (or only) concentration tested.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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